diff --git a/mailnews/base/src/nsMessenger.cpp b/mailnews/base/src/nsMessenger.cpp
index deb9d94f7b39..bd82b78020ce 100644
--- a/mailnews/base/src/nsMessenger.cpp
+++ b/mailnews/base/src/nsMessenger.cpp
@@ -138,7 +138,7 @@ NS_NewMessengerBootstrap(const nsIID &aIID, void ** msgboot,
 class nsMessenger : public nsIMessenger {
 
 public:
-    NS_DECL_ISUPPORTS;
+    NS_DECL_ISUPPORTS
 };
 
 NS_IMPL_ISUPPORTS(nsMessenger, nsIMessenger::GetIID())