diff --git a/netwerk/test/fuzz/TestHttpFuzzing.cpp b/netwerk/test/fuzz/TestHttpFuzzing.cpp
index c6db4769bfa4..e0028ffdf5dd 100644
--- a/netwerk/test/fuzz/TestHttpFuzzing.cpp
+++ b/netwerk/test/fuzz/TestHttpFuzzing.cpp
@@ -218,6 +218,16 @@ static int FuzzingRunNetworkHttp(const uint8_t* data, size_t size) {
     // Wait for StopRequest
     gStreamListener->waitUntilDone();
 
+    bool mainPingBack = false;
+
+    NS_DispatchBackgroundTask(NS_NewRunnableFunction("Dummy", [&]() {
+      NS_DispatchToMainThread(NS_NewRunnableFunction("Dummy", [&]() {
+        mainPingBack = true;
+      }));
+    }));
+
+    SpinEventLoopUntil([&]() -> bool { return mainPingBack; });
+
     channelRef = do_GetWeakReference(gHttpChannel);
   }