1 files changed, 1 insertions, 1 deletions
diff --git a/server/sonar-web/src/main/js/apps/coding-rules/components/CustomRuleButton.tsx b/server/sonar-web/src/main/js/apps/coding-rules/components/CustomRuleButton.tsx
index b2e9c8d5eb6..5882d70b307 100644
--- a/server/sonar-web/src/main/js/apps/coding-rules/components/CustomRuleButton.tsx
+++ b/server/sonar-web/src/main/js/apps/coding-rules/components/CustomRuleButton.tsx
@@ -36,7 +36,7 @@ interface State {
 }
 
 export default class CustomRuleButton extends React.PureComponent<Props, State> {
-  mounted: boolean;
+  mounted = false;
   state: State = { modal: false };
 
   componentDidMount() {