diff --git a/mozilla/widget/src/windows/nsWindow.cpp b/mozilla/widget/src/windows/nsWindow.cpp
index 85eb4081dd2..154027d0462 100644
--- a/mozilla/widget/src/windows/nsWindow.cpp
+++ b/mozilla/widget/src/windows/nsWindow.cpp
@@ -1064,7 +1064,7 @@ nsWindow :: DealWithPopups ( UINT inMsg, WPARAM inWParam, LPARAM inLParam, LRESU
         // false allows the event to be dispatched
         //
         // So if we are NOT supposed to be consuming events, let it go through
-        if (gRollupConsumeRollupEvent) {
+        if (gRollupConsumeRollupEvent && inMsg != WM_RBUTTONDOWN) {
           *outResult = TRUE;
           return TRUE;
         }