diff --git a/packages/react-devtools-extensions/src/main/index.js b/packages/react-devtools-extensions/src/main/index.js
index a82df1e226..46c42418c3 100644
--- a/packages/react-devtools-extensions/src/main/index.js
+++ b/packages/react-devtools-extensions/src/main/index.js
@@ -111,7 +111,7 @@ function createBridge() {
     chrome.devtools.panels.elements.onSelectionChanged.removeListener(
       onBrowserElementSelectionChanged,
     );
-    if (sourcesPanel) {
+    if (sourcesPanel && sourcesPanel.onSelectionChanged) {
       currentSelectedSource = null;
       sourcesPanel.onSelectionChanged.removeListener(
         onBrowserSourceSelectionChanged,
@@ -124,7 +124,7 @@ function createBridge() {
   chrome.devtools.panels.elements.onSelectionChanged.addListener(
     onBrowserElementSelectionChanged,
   );
-  if (sourcesPanel) {
+  if (sourcesPanel && sourcesPanel.onSelectionChanged) {
     sourcesPanel.onSelectionChanged.addListener(
       onBrowserSourceSelectionChanged,
     );