diff --git a/ts/components/session/LeftPaneSectionHeader.tsx b/ts/components/session/LeftPaneSectionHeader.tsx
index c150653c8..53405b20c 100644
--- a/ts/components/session/LeftPaneSectionHeader.tsx
+++ b/ts/components/session/LeftPaneSectionHeader.tsx
@@ -110,6 +110,8 @@ export class LeftPaneSectionHeader extends React.Component<Props, State> {
     this.setState({
       selectedTab: tabType,
     });
-    this.props.onTabSelected(tabType);
+    if (this.props.onTabSelected) {
+      this.props.onTabSelected(tabType);
+    }
   };
 }