diff --git a/app/models/project.rb b/app/models/project.rb
index 35ffb0a415d751df55a1ac9d6fdc195cf7df2064..bc15f8c4138c2e52c4a2be4854401b1e3e219a7d 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -431,7 +431,7 @@ class Project < ActiveRecord::Base
 
   def builds_for(build_name, ref = 'HEAD')
     ct = commit(ref)
-    return [] unless ct
+    return builds.none unless ct
 
     sha = commit(ref).sha
 
diff --git a/spec/models/build_spec.rb b/spec/models/build_spec.rb
index c7c247189f5be0a84613cfbaabf73e42434caa4c..b1354faa722112f0b58c6892ac7bc677c6c5ee17 100644
--- a/spec/models/build_spec.rb
+++ b/spec/models/build_spec.rb
@@ -697,5 +697,11 @@ describe Ci::Build, models: true do
 
       expect(build_ids).to eq([build.id])
     end
+
+    it 'returns empty relation if the build cannot be found' do
+      builds = project.builds_for(build.name, 'TAIL').all
+
+      expect(builds).to be_empty
+    end
   end
 end