diff --git a/app/models/ci/build.rb b/app/models/ci/build.rb
index 2079d5a2178..850895845f4 100644
--- a/app/models/ci/build.rb
+++ b/app/models/ci/build.rb
@@ -382,7 +382,9 @@ module Ci
     private
 
     def update_artifacts_size
-      self.artifacts_size = artifacts_file.size
+      self.artifacts_size = if artifacts_file.exists?
+                              artifacts_file.size
+                            end
     end
 
     def erase_trace!
diff --git a/spec/requests/ci/api/builds_spec.rb b/spec/requests/ci/api/builds_spec.rb
index 64cb7dd12d0..666fdbdd2b5 100644
--- a/spec/requests/ci/api/builds_spec.rb
+++ b/spec/requests/ci/api/builds_spec.rb
@@ -486,7 +486,7 @@ describe Ci::API::API do
           expect(response).to have_http_status(200)
           expect(build.artifacts_file.exists?).to be_falsy
           expect(build.artifacts_metadata.exists?).to be_falsy
-          expect(build.artifacts_size).to eq(0)
+          expect(build.artifacts_size).to be_nil
         end
       end