diff --git a/Makefile b/Makefile
index dedf6885b6..33b12f8a3c 100644
--- a/Makefile
+++ b/Makefile
@@ -236,7 +236,7 @@ includemakefiles= \
 			$$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y)))))))) \
 	$(foreach special,$(special-classes), \
 		$(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
-	$(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
+	$(eval subdirs+=$$(subst $(CURDIR)/,,$$(wildcard $$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y))))))
 
 # For each path in $(subdirs) call includemakefiles
 # Repeat until subdirs is empty