diff --git a/src/ui/components/data-inspector/DataInspector.js b/src/ui/components/data-inspector/DataInspector.js
index db5cc19b5..518d88027 100644
--- a/src/ui/components/data-inspector/DataInspector.js
+++ b/src/ui/components/data-inspector/DataInspector.js
@@ -203,7 +203,15 @@ function getRootContextMenu(data: Object): Array<Electron$MenuItemOptions> {
       },
     },
   ];
-  rootContextMenuCache.set(data, menu);
+  if (data instanceof Object) {
+    rootContextMenuCache.set(data, menu);
+  } else {
+    console.error(
+      '[data-inspector] Ignoring unsupported data type for cache: ',
+      data,
+      typeof data,
+    );
+  }
   return menu;
 }