diff --git a/app/assets/javascripts/blob/notebook/index.js b/app/assets/javascripts/blob/notebook/index.js
index 27312d718b0..c858a6bb7b4 100644
--- a/app/assets/javascripts/blob/notebook/index.js
+++ b/app/assets/javascripts/blob/notebook/index.js
@@ -40,10 +40,10 @@ export default () => {
           class="text-center"
           v-if="error">
           <span v-if="loadError">
-            An error occured whilst loading the file. Please try again later.
+            An error occurred whilst loading the file. Please try again later.
           </span>
           <span v-else>
-            An error occured whilst parsing the file.
+            An error occurred whilst parsing the file.
           </span>
         </p>
       </div>
diff --git a/app/assets/javascripts/blob/pdf/index.js b/app/assets/javascripts/blob/pdf/index.js
index 0ed915c1ac9..7109f356540 100644
--- a/app/assets/javascripts/blob/pdf/index.js
+++ b/app/assets/javascripts/blob/pdf/index.js
@@ -48,10 +48,10 @@ export default () => {
           class="text-center"
           v-if="error">
           <span v-if="loadError">
-            An error occured whilst loading the file. Please try again later.
+            An error occurred whilst loading the file. Please try again later.
           </span>
           <span v-else>
-            An error occured whilst decoding the file.
+            An error occurred whilst decoding the file.
           </span>
         </p>
       </div>
diff --git a/app/assets/javascripts/boards/components/board_new_issue.js b/app/assets/javascripts/boards/components/board_new_issue.js
index 541b8049855..bc28f7f45f4 100644
--- a/app/assets/javascripts/boards/components/board_new_issue.js
+++ b/app/assets/javascripts/boards/components/board_new_issue.js
@@ -68,7 +68,7 @@ export default {
         <div class="flash-container"
           v-if="error">
           <div class="flash-alert">
-            An error occured. Please try again.
+            An error occurred. Please try again.
           </div>
         </div>
         <label class="label-light"
diff --git a/app/assets/javascripts/environments/components/environment.vue b/app/assets/javascripts/environments/components/environment.vue
index 14fde1afb16..ce5f6219a3e 100644
--- a/app/assets/javascripts/environments/components/environment.vue
+++ b/app/assets/javascripts/environments/components/environment.vue
@@ -163,7 +163,7 @@ export default {
 
         this.service.postAction(endpoint)
           .then(() => this.fetchEnvironments())
-          .catch(() => new Flash('An error occured while making the request.'));
+          .catch(() => new Flash('An error occurred while making the request.'));
       }
     },
 
diff --git a/app/assets/javascripts/environments/folder/environments_folder_view.vue b/app/assets/javascripts/environments/folder/environments_folder_view.vue
index 35891240239..01e70c0bbb7 100644
--- a/app/assets/javascripts/environments/folder/environments_folder_view.vue
+++ b/app/assets/javascripts/environments/folder/environments_folder_view.vue
@@ -158,7 +158,7 @@ export default {
 
         this.service.postAction(endpoint)
           .then(() => this.fetchEnvironments())
-          .catch(() => new Flash('An error occured while making the request.'));
+          .catch(() => new Flash('An error occurred while making the request.'));
       }
     },
   },
diff --git a/app/assets/javascripts/filtered_search/dropdown_emoji.js b/app/assets/javascripts/filtered_search/dropdown_emoji.js
index f9bbbf0cbc1..ada14d2053c 100644
--- a/app/assets/javascripts/filtered_search/dropdown_emoji.js
+++ b/app/assets/javascripts/filtered_search/dropdown_emoji.js
@@ -14,7 +14,7 @@ class DropdownEmoji extends gl.FilteredSearchDropdown {
         loadingTemplate: this.loadingTemplate,
         onError() {
           /* eslint-disable no-new */
-          new Flash('An error occured fetching the dropdown data.');
+          new Flash('An error occurred fetching the dropdown data.');
           /* eslint-enable no-new */
         },
       },
diff --git a/app/assets/javascripts/filtered_search/dropdown_non_user.js b/app/assets/javascripts/filtered_search/dropdown_non_user.js
index 0bc4b6f22a9..b32d589481d 100644
--- a/app/assets/javascripts/filtered_search/dropdown_non_user.js
+++ b/app/assets/javascripts/filtered_search/dropdown_non_user.js
@@ -17,7 +17,7 @@ class DropdownNonUser extends gl.FilteredSearchDropdown {
         preprocessing,
         onError() {
           /* eslint-disable no-new */
-          new Flash('An error occured fetching the dropdown data.');
+          new Flash('An error occurred fetching the dropdown data.');
           /* eslint-enable no-new */
         },
       },
diff --git a/app/assets/javascripts/filtered_search/dropdown_user.js b/app/assets/javascripts/filtered_search/dropdown_user.js
index 720fbc87ea0..ce8817b1b2e 100644
--- a/app/assets/javascripts/filtered_search/dropdown_user.js
+++ b/app/assets/javascripts/filtered_search/dropdown_user.js
@@ -26,7 +26,7 @@ class DropdownUser extends gl.FilteredSearchDropdown {
         },
         onError() {
           /* eslint-disable no-new */
-          new Flash('An error occured fetching the dropdown data.');
+          new Flash('An error occurred fetching the dropdown data.');
           /* eslint-enable no-new */
         },
       },
diff --git a/app/assets/javascripts/filtered_search/filtered_search_manager.js b/app/assets/javascripts/filtered_search/filtered_search_manager.js
index 9178fec085a..a44dc279a6f 100644
--- a/app/assets/javascripts/filtered_search/filtered_search_manager.js
+++ b/app/assets/javascripts/filtered_search/filtered_search_manager.js
@@ -36,7 +36,7 @@ class FilteredSearchManager {
       .catch((error) => {
         if (error.name === 'RecentSearchesServiceError') return undefined;
         // eslint-disable-next-line no-new
-        new window.Flash('An error occured while parsing recent searches');
+        new window.Flash('An error occurred while parsing recent searches');
         // Gracefully fail to empty array
         return [];
       })
diff --git a/app/assets/javascripts/pipelines/mixins/pipelines.js b/app/assets/javascripts/pipelines/mixins/pipelines.js
index 9adc15e6266..e97f5632dc8 100644
--- a/app/assets/javascripts/pipelines/mixins/pipelines.js
+++ b/app/assets/javascripts/pipelines/mixins/pipelines.js
@@ -97,7 +97,7 @@ export default {
     postAction(endpoint) {
       this.service.postAction(endpoint)
         .then(() => eventHub.$emit('refreshPipelines'))
-        .catch(() => new Flash('An error occured while making the request.'));
+        .catch(() => new Flash('An error occurred while making the request.'));
     },
   },
 };
diff --git a/app/assets/javascripts/repo/components/repo_commit_section.vue b/app/assets/javascripts/repo/components/repo_commit_section.vue
index 1282828b504..f3db1742253 100644
--- a/app/assets/javascripts/repo/components/repo_commit_section.vue
+++ b/app/assets/javascripts/repo/components/repo_commit_section.vue
@@ -44,7 +44,7 @@ export default {
       Store.submitCommitsLoading = true;
       Service.commitFiles(payload)
         .then(this.resetCommitState)
-        .catch(() => Flash('An error occured while committing your changes'));
+        .catch(() => Flash('An error occurred while committing your changes'));
     },
 
     resetCommitState() {
diff --git a/app/assets/javascripts/repo/components/repo_preview.vue b/app/assets/javascripts/repo/components/repo_preview.vue
index 2200754cbef..4705f4004cd 100644
--- a/app/assets/javascripts/repo/components/repo_preview.vue
+++ b/app/assets/javascripts/repo/components/repo_preview.vue
@@ -45,7 +45,7 @@ export default {
     v-else
     class="vertical-center render-error">
     <p class="text-center">
-      The source could not be displayed because a rendering error occured. You can <a :href="activeFile.raw_path">download</a> it instead.
+      The source could not be displayed because a rendering error occurred. You can <a :href="activeFile.raw_path">download</a> it instead.
     </p>
   </div>
 </div>
diff --git a/app/assets/javascripts/sidebar/lib/sidebar_move_issue.js b/app/assets/javascripts/sidebar/lib/sidebar_move_issue.js
index 1c15a1b877a..3c9de02407e 100644
--- a/app/assets/javascripts/sidebar/lib/sidebar_move_issue.js
+++ b/app/assets/javascripts/sidebar/lib/sidebar_move_issue.js
@@ -38,7 +38,7 @@ class SidebarMoveIssue {
       data: (searchTerm, callback) => {
         this.mediator.fetchAutocompleteProjects(searchTerm)
           .then(callback)
-          .catch(() => new Flash('An error occured while fetching projects autocomplete.'));
+          .catch(() => new Flash('An error occurred while fetching projects autocomplete.'));
       },
       renderRow: project => `
         <li>
@@ -73,7 +73,7 @@ class SidebarMoveIssue {
 
       this.mediator.moveIssue()
         .catch(() => {
-          Flash('An error occured while moving the issue.');
+          Flash('An error occurred while moving the issue.');
           this.$confirmButton
             .enable()
             .removeClass('is-loading');
diff --git a/app/assets/javascripts/sidebar/sidebar_mediator.js b/app/assets/javascripts/sidebar/sidebar_mediator.js
index e38a8db4cc5..2fe6e5b31f0 100644
--- a/app/assets/javascripts/sidebar/sidebar_mediator.js
+++ b/app/assets/javascripts/sidebar/sidebar_mediator.js
@@ -41,7 +41,7 @@ export default class SidebarMediator {
         this.store.setAssigneeData(data);
         this.store.setTimeTrackingData(data);
       })
-      .catch(() => new Flash('Error occured when fetching sidebar data'));
+      .catch(() => new Flash('Error occurred when fetching sidebar data'));
   }
 
   fetchAutocompleteProjects(searchTerm) {
diff --git a/spec/features/issues/filtered_search/recent_searches_spec.rb b/spec/features/issues/filtered_search/recent_searches_spec.rb
index 5eeecaeda47..447281ed19d 100644
--- a/spec/features/issues/filtered_search/recent_searches_spec.rb
+++ b/spec/features/issues/filtered_search/recent_searches_spec.rb
@@ -104,6 +104,6 @@ describe 'Recent searches', js: true do
     set_recent_searches(project_1_local_storage_key, 'fail')
     visit project_issues_path(project_1)
 
-    expect(find('.flash-alert')).to have_text('An error occured while parsing recent searches')
+    expect(find('.flash-alert')).to have_text('An error occurred while parsing recent searches')
   end
 end
diff --git a/spec/javascripts/blob/notebook/index_spec.js b/spec/javascripts/blob/notebook/index_spec.js
index 11f2a950678..c3e67550f05 100644
--- a/spec/javascripts/blob/notebook/index_spec.js
+++ b/spec/javascripts/blob/notebook/index_spec.js
@@ -117,7 +117,7 @@ describe('iPython notebook renderer', () => {
     it('shows error message', () => {
       expect(
         document.querySelector('.md').textContent.trim(),
-      ).toBe('An error occured whilst parsing the file.');
+      ).toBe('An error occurred whilst parsing the file.');
     });
   });
 
@@ -153,7 +153,7 @@ describe('iPython notebook renderer', () => {
     it('shows error message', () => {
       expect(
         document.querySelector('.md').textContent.trim(),
-      ).toBe('An error occured whilst loading the file. Please try again later.');
+      ).toBe('An error occurred whilst loading the file. Please try again later.');
     });
   });
 });
diff --git a/spec/javascripts/blob/pdf/index_spec.js b/spec/javascripts/blob/pdf/index_spec.js
index bbeaf95e68d..51bf3086627 100644
--- a/spec/javascripts/blob/pdf/index_spec.js
+++ b/spec/javascripts/blob/pdf/index_spec.js
@@ -76,7 +76,7 @@ describe('PDF renderer', () => {
     it('shows error message', () => {
       expect(
         document.querySelector('.md').textContent.trim(),
-      ).toBe('An error occured whilst loading the file. Please try again later.');
+      ).toBe('An error occurred whilst loading the file. Please try again later.');
     });
   });
 });