diff --git a/config/modules.mk b/config/modules.mk
index 56678d9cb..97db37736 100644
--- a/config/modules.mk
+++ b/config/modules.mk
@@ -36,7 +36,7 @@ FT_MODULE_LIST := $(BUILD)$(SEP)ftmodule.h
 # file in order to `clean' the list
 #
 clean_module_list:
-	@-$(DELETE) $(FT_MODULE_LIST)
+	@-$(DELETE) $(subst $(SEP),$(HOSTSEP),$(FT_MODULE_LIST))
 	@-echo Regenerating the font drivers list in $(FT_MODULE_LIST)
 
 make_module_list: clean_module_list