diff --git a/lib/auth/sia/Makefile.am b/lib/auth/sia/Makefile.am
index fd59dea1e..67474dbf5 100644
--- a/lib/auth/sia/Makefile.am
+++ b/lib/auth/sia/Makefile.am
@@ -56,7 +56,7 @@ libsia_krb5.so: $(OBJS)
 	else \
 		echo "missing libraries"; exit 1; \
 	fi
-	ostrip -x -z $@
+	ostrip -x $@
 
 CLEANFILES = libsia_krb5.so $(OBJS) so_locations