--- old/make/launcher/Launcher-java.base.gmk	2017-10-05 11:56:12.544582689 +0200
+++ new/make/launcher/Launcher-java.base.gmk	2017-10-05 11:56:12.296586604 +0200
@@ -25,7 +25,7 @@
 
 include LauncherCommon.gmk
 
-$(eval $(call IncludeCustomExtension, , launcher/Launcher-java.base.gmk))
+$(eval $(call IncludeCustomExtension, launcher/Launcher-java.base.gmk))
 
 JAVA_RC_FLAGS += -I $(TOPDIR)/src/java.base/windows/native/common
 JAVA_RC_FLAGS += -I $(TOPDIR)/src/java.base/windows/native/launcher/icons