diff --git a/mozilla/xpcom/tests/Makefile.in b/mozilla/xpcom/tests/Makefile.in
index 4dcc1483e7c..e9351d81d13 100644
--- a/mozilla/xpcom/tests/Makefile.in
+++ b/mozilla/xpcom/tests/Makefile.in
@@ -46,7 +46,7 @@ CPPSRCS		= \
 SIMPLE_PROGRAMS	= $(CPPSRCS:.cpp=)
 
 ifdef NO_LD_ARCHIVE_FLAGS
-LOST_SYM_LIBS	= -lxpcomds_s -lxptinfo
+LOST_SYM_LIBS	= -lxpcomds_s -lxptinfo -lmozreg_s
 endif
 
 include $(topsrcdir)/config/config.mk