diff -r 57f1bf06742e -r 8896112226cb src/hotspot/share/gc/shared/workgroup.hpp
--- a/src/hotspot/share/gc/shared/workgroup.hpp	Tue Aug 28 21:25:37 2018 -0700
+++ b/src/hotspot/share/gc/shared/workgroup.hpp	Wed Aug 29 08:00:00 2018 +0200
@@ -154,8 +154,6 @@
   virtual uint active_workers() const {
     assert(_active_workers <= _total_workers,
            "_active_workers: %u > _total_workers: %u", _active_workers, _total_workers);
-    assert(UseDynamicNumberOfGCThreads || _active_workers == _total_workers,
-           "Unless dynamic should use total workers");
     return _active_workers;
   }