diff --git a/changelogs/unreleased/14553-missing-space-in-log-msg.yml b/changelogs/unreleased/14553-missing-space-in-log-msg.yml
new file mode 100644
index 00000000000..a0420d49770
--- /dev/null
+++ b/changelogs/unreleased/14553-missing-space-in-log-msg.yml
@@ -0,0 +1,5 @@
+---
+title: "Add missing space in Sidekiq memory killer log message"
+merge_request: 14553
+author: Benjamin Drung
+type: fixed
diff --git a/lib/gitlab/sidekiq_middleware/memory_killer.rb b/lib/gitlab/sidekiq_middleware/memory_killer.rb
index 104280f520a..d7d24eeb37b 100644
--- a/lib/gitlab/sidekiq_middleware/memory_killer.rb
+++ b/lib/gitlab/sidekiq_middleware/memory_killer.rb
@@ -25,7 +25,7 @@ module Gitlab
 
           Sidekiq.logger.warn "current RSS #{current_rss} exceeds maximum RSS "\
             "#{MAX_RSS}"
-          Sidekiq.logger.warn "this thread will shut down PID #{Process.pid} - Worker #{worker.class} - JID-#{job['jid']}"\
+          Sidekiq.logger.warn "this thread will shut down PID #{Process.pid} - Worker #{worker.class} - JID-#{job['jid']} "\
             "in #{GRACE_TIME} seconds"
           sleep(GRACE_TIME)