diff -r eb28be8f935d -r 743814386712 make/Docs.gmk
--- a/make/Docs.gmk	Thu Oct 05 11:02:18 2017 +0200
+++ b/make/Docs.gmk	Thu Oct 05 12:41:06 2017 +0200
@@ -37,7 +37,7 @@
 
 ################################################################################
 # Hook to include the corresponding custom file, if present.
-$(eval $(call IncludeCustomExtension, , Docs.gmk))
+$(eval $(call IncludeCustomExtension, Docs.gmk))
 
 ################################################################################
 # This file generates all documentation for OpenJDK.