diff --git a/mozilla/lib/xp/Makefile b/mozilla/lib/xp/Makefile
index 7efc329f662..d7e279181a9 100644
--- a/mozilla/lib/xp/Makefile
+++ b/mozilla/lib/xp/Makefile
@@ -30,7 +30,6 @@ CSRCS		= \
 		  xp_error.c \
 		  xp_intl.c \
 		  xp_ncent.c \
-		  xp_reg.c \
 		  xp_rgb.c \
 		  xp_qsort.c \
 		  xp_str.c \