--- old/src/hotspot/share/gc/shared/collectorPolicy.hpp	2018-04-27 15:29:50.642202679 +0200
+++ new/src/hotspot/share/gc/shared/collectorPolicy.hpp	2018-04-27 15:29:50.402202687 +0200
@@ -48,11 +48,8 @@
 // Forward declarations.
 class GenCollectorPolicy;
 class AdaptiveSizePolicy;
-#if INCLUDE_ALL_GCS
 class ConcurrentMarkSweepPolicy;
 class G1CollectorPolicy;
-#endif // INCLUDE_ALL_GCS
-
 class MarkSweepPolicy;
 
 class CollectorPolicy : public CHeapObj<mtGC> {