diff --git a/spec/javascripts/ide/components/commit_sidebar/form_spec.js b/spec/javascripts/ide/components/commit_sidebar/form_spec.js
index 430aaa90d3cf88b63c772a980048514c53fb7940..c387b96795bb5240083cf093f63e18d1191241ed 100644
--- a/spec/javascripts/ide/components/commit_sidebar/form_spec.js
+++ b/spec/javascripts/ide/components/commit_sidebar/form_spec.js
@@ -11,6 +11,8 @@ describe('IDE commit form', () => {
   let vm;
 
   beforeEach(() => {
+    spyOnProperty(window, 'innerHeight').and.returnValue(800);
+
     vm = createComponentWithStore(Component, store).$mount();
   });