--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Mon Oct 14 08:59:12 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Mon Oct 14 11:03:13 2019 +0200
@@ -964,7 +964,6 @@
     ShenandoahHeapRegion* r;
     while ((r =_cs->claim_next()) != NULL) {
       assert(r->has_live(), "Region " SIZE_FORMAT " should have been reclaimed early", r->region_number());
-      assert(r->is_conc_move_allowed(), "Region " SIZE_FORMAT " should be movable", r->region_number());
       _sh->marked_object_iterate(r, &cl);
 
       if (ShenandoahPacing) {

--- a/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.hpp	Mon Oct 14 08:59:12 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.hpp	Mon Oct 14 11:03:13 2019 +0200
@@ -198,8 +198,7 @@
 
   // Macro-properties:
   bool is_alloc_allowed()          const { return is_empty() || is_regular() || _state == _pinned; }
-  bool is_conc_move_allowed()      const { return is_regular() || _state == _cset; }
-  bool is_stw_move_allowed()       const { return is_conc_move_allowed() || (ShenandoahHumongousMoves && _state == _humongous_start); }
+  bool is_stw_move_allowed()       const { return is_regular() || _state == _cset || (ShenandoahHumongousMoves && _state == _humongous_start); }
 
   RegionState state()              const { return _state; }
   int  state_ordinal()             const { return region_state_to_ordinal(_state); }