diff --git a/Makefile.rules b/Makefile.rules
index 425a9f434..9870a77a5 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -167,7 +167,7 @@ ALL_LIBS+=$(foreach l, $(SER_LIBS), -L$(dir $l) -l$(notdir $l))
 
 $(NAME): librpath.lst $(SER_LIBS_DEPS)
 
-$(SER_LIBS_DEPS):
+$(SER_LIBS_DEPS): FORCE
 	@$(MAKE) -wC $(dir $@)  compile_for_install=$(lib_compile_for_install) \
 		NOREBUILD_DEFS="$(NOREBUILD_DEFS) $(LIB_NOREBUILD_DEFS)" \
 		NOREBUILD_INCLUDES="$(NOREBUILD_INCLUDES) $(LIB_NOREBUILD_INCLUDES)"