diff --git a/mailnews/addrbook/src/nsLDAPAutoCompleteSession.h b/mailnews/addrbook/src/nsLDAPAutoCompleteSession.h
index 608a13333fec..f066d6d03e9e 100644
--- a/mailnews/addrbook/src/nsLDAPAutoCompleteSession.h
+++ b/mailnews/addrbook/src/nsLDAPAutoCompleteSession.h
@@ -48,7 +48,6 @@
 #include "nsString.h"
 #include "nsISupportsArray.h"
 #include "nsIConsoleService.h"
-#include "nsVoidArray.h"
 #include "nsIAuthPrompt.h"
 
 // 964665d0-1dd1-11b2-aeae-897834fb00b9