diff --git a/lib/xp/xp_stub.c b/lib/xp/xp_stub.c
index 3f2d039f0bf..ea3558e8067 100644
--- a/lib/xp/xp_stub.c
+++ b/lib/xp/xp_stub.c
@@ -31,12 +31,10 @@ NOT_NULL (const char *x)
 #endif
 
 
-#if 0
 void XP_AssertAtLine( char *pFileName, int iLine )
 {
     PR_Assert("XP Assert", pFileName, iLine);
 }
-#endif
 
 /* XP_GetString
  *