diff --git a/lib/libsys/Makefile b/lib/libsys/Makefile
--- a/lib/libsys/Makefile
+++ b/lib/libsys/Makefile
@@ -43,6 +43,7 @@
 # Link with static libcompiler_rt.a.
 #
 LDFLAGS+= -nodefaultlibs
+LDFLAGS+= -Wl,-Bsymbolic
 LIBADD+=	compiler_rt
 
 .if ${MK_SSP} != "no" && \