diff --git a/core/product_config.mk b/core/product_config.mk
index db8ca01acc..1ef8890d46 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -74,7 +74,7 @@ endif
 ###########################################################
 
 define find-copy-subdir-files
-$(sort $(shell find $(2) -name "$(1)" -type f | $(SED_EXTENDED) "s:($(2)/?(.*)):\\1\\:$(3)/\\2:" | sed "s://:/:g"))
+$(shell find $(2) -name "$(1)" -type f | $(SED_EXTENDED) "s:($(2)/?(.*)):\\1\\:$(3)/\\2:" | sed "s://:/:g" | sort)
 endef
 
 #