diff --git a/mozilla/widget/src/windows/nsToolkit.cpp b/mozilla/widget/src/windows/nsToolkit.cpp
index a1eb407b69b..8b620ca6d1d 100644
--- a/mozilla/widget/src/windows/nsToolkit.cpp
+++ b/mozilla/widget/src/windows/nsToolkit.cpp
@@ -189,6 +189,7 @@ nsToolkit::~nsToolkit()
 
     if (!nsToolkit::gAIMMCount) {
         if(nsToolkit::gAIMMApp) {
+            nsToolkit::gAIMMApp->Deactivate();
             nsToolkit::gAIMMApp->Release();
             nsToolkit::gAIMMApp = NULL;
         }