diff --git a/core/definitions.mk b/core/definitions.mk
index 4c499ad..5867d09 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -312,7 +312,7 @@
 
 define find-subdir-assets
 $(if $(1),$(patsubst ./%,%, \
-	$(shell if [ -d $(1) ] ; then cd $(1) ; find ./ -type f -and -not -type l ; fi)), \
+	$(shell if [ -d $(1) ] ; then cd $(1) ; find ./ -not -name '.*' -and -type f -and -not -type l ; fi)), \
 	$(warning Empty argument supplied to find-subdir-assets) \
 )
 endef