diff --git a/core/product.mk b/core/product.mk
index 4849d7abd..d8f78cdb8 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -273,3 +273,7 @@ $(strip \
     $(eval $(error The following variables have been changed: $(changed_variables))),)
 )
 endef
+
+define add-to-product-copy-files-if-exists
+$(if $(wildcard $(word 1,$(subst :, ,$(1)))),$(1))
+endef