--- old/make/test/JtregNativeHotspot.gmk	2017-10-05 11:56:18.232492898 +0200
+++ new/make/test/JtregNativeHotspot.gmk	2017-10-05 11:56:17.976496939 +0200
@@ -35,7 +35,7 @@
 include MakeBase.gmk
 include TestFilesCompilation.gmk
 
-$(eval $(call IncludeCustomExtension, , hotspot/test/JtregNative.gmk))
+$(eval $(call IncludeCustomExtension, hotspot/test/JtregNative.gmk))
 
 ################################################################################
 # Targets for building the native tests themselves.