diff -r 8f849d3ec1e5 -r d376d86b0a01 src/hotspot/share/opto/classes.cpp
--- a/src/hotspot/share/opto/classes.cpp	Tue Oct 08 15:30:46 2019 +0200
+++ b/src/hotspot/share/opto/classes.cpp	Wed Oct 09 12:30:06 2019 +0000
@@ -48,9 +48,6 @@
 #include "opto/subnode.hpp"
 #include "opto/vectornode.hpp"
 #include "utilities/macros.hpp"
-#if INCLUDE_ZGC
-#include "gc/z/c2/zBarrierSetC2.hpp"
-#endif
 #if INCLUDE_SHENANDOAHGC
 #include "gc/shenandoah/c2/shenandoahBarrierSetC2.hpp"
 #endif