diff --git a/platform/chromium/vapi-client.js b/platform/chromium/vapi-client.js
index 057687f..e4099a2 100644
--- a/platform/chromium/vapi-client.js
+++ b/platform/chromium/vapi-client.js
@@ -33,16 +33,16 @@
 
 self.vAPI = self.vAPI || {};
 
-// https://github.com/gorhill/uBlock/issues/456
-// Already injected?
-if ( vAPI.vapiClient ) {
-    return;
-}
-vAPI.vapiClient = true;
-
 var chrome = self.chrome;
 var vAPI = self.vAPI;
 
+// https://github.com/gorhill/uBlock/issues/456
+// Already injected?
+if ( vAPI.vapiClientInjected ) {
+    return;
+}
+vAPI.vapiClientInjected = true;
+
 vAPI.chrome = true;
 
 /******************************************************************************/