diff --git a/mozilla/netwerk/dns/src/nsIDNKitInterface.h b/mozilla/netwerk/dns/src/nsIDNKitInterface.h
index 93f140810ca..a65ca7ef874 100644
--- a/mozilla/netwerk/dns/src/nsIDNKitInterface.h
+++ b/mozilla/netwerk/dns/src/nsIDNKitInterface.h
@@ -189,4 +189,4 @@ idn_nameprep_isvalidbidi(idn_nameprep_t handle, const unsigned long *str,
 }
 #endif /* __cplusplus */
 
-#endif //nsIDNKitWrapper_h__
+#endif /* nsIDNKitWrapper_h__ */
diff --git a/mozilla/tools/codesighs/nm2tsv.c b/mozilla/tools/codesighs/nm2tsv.c
index 324d1619fa2..5bd3d94cfa2 100644
--- a/mozilla/tools/codesighs/nm2tsv.c
+++ b/mozilla/tools/codesighs/nm2tsv.c
@@ -143,7 +143,7 @@ int nm2tsv(Options* inOptions)
 */
 {
     int retval = 0;
-    char lineBuffer[4096];  // yes, the are some very large symbols
+    char lineBuffer[4096];  /* yes, the are some very large symbols */
     char* module = NULL;
     char* size = NULL;
     char* type = NULL;
diff --git a/mozilla/xpcom/threads/plevent.c b/mozilla/xpcom/threads/plevent.c
index e22d5da2724..1852ac2d2d5 100644
--- a/mozilla/xpcom/threads/plevent.c
+++ b/mozilla/xpcom/threads/plevent.c
@@ -915,9 +915,10 @@ _pl_CleanupNativeNotifier(PLEventQueue* self)
     }
     RemoveProp(self->eventReceiverWindow, _md_GetEventQueuePropName());
 
-    // DestroyWindow doesn't do anything when called from a non ui thread.  Since 
-    // self->eventReceiverWindow was created on the ui thread, it must be destroyed
-    // on the ui thread.
+    /* DestroyWindow doesn't do anything when called from a non ui thread.  Since 
+     * self->eventReceiverWindow was created on the ui thread, it must be destroyed
+     * on the ui thread.
+     */
     SendMessage(self->eventReceiverWindow, WM_CLOSE, 0, 0);
 
 #elif defined(XP_OS2)