diff --git a/make/cache.mk b/make/cache.mk
index ad46fb5d..c1bde904 100644
--- a/make/cache.mk
+++ b/make/cache.mk
@@ -32,6 +32,10 @@ clean.cache:
 
 cache: $(CACHE_PROJECT_MK)
 $(CACHE_PROJECT_MK): $(CACHED_FILES) $(JWBDIR)/make/cache.mk
+ifneq ($(wildcard $(CACHE_PROJECT_MK)),)
+	rm -f $@
+	make $@
+else
 	@echo 'ifneq ($$(JW_PKG_NO_CACHE),true)' | tee $@.tmp
 	@echo $(foreach v,$(CACHED_VARS),$v = $(value $(v)) EOL) | \
 		$(SED) 's/\s\+EOL/\n/g;' | \
@@ -42,3 +46,4 @@ $(CACHE_PROJECT_MK): $(CACHED_FILES) $(JWBDIR)/make/cache.mk
 		tee -a $@.tmp
 	@echo 'endif # ifneq ($$(JW_PKG_NO_CACHE),true)' | tee -a $@.tmp
 	mv $@.tmp $@
+endif