diff --git a/mozilla/toolkit/mozapps/installer/unix/wizard/nsWelcomeDlg.cpp b/mozilla/toolkit/mozapps/installer/unix/wizard/nsWelcomeDlg.cpp
index d9ec7d4771f..62859678def 100644
--- a/mozilla/toolkit/mozapps/installer/unix/wizard/nsWelcomeDlg.cpp
+++ b/mozilla/toolkit/mozapps/installer/unix/wizard/nsWelcomeDlg.cpp
@@ -27,6 +27,8 @@
 #include "nsXInstaller.h"
 #include <sys/stat.h>
 
+const int nsWelcomeDlg::kMsgCount;
+
 nsWelcomeDlg::nsWelcomeDlg()
   : mTitle(NULL), mWelcomeMsg(NULL), mPixmap(NULL), mBox(NULL)
 {