diff --git a/src/hotspot/share/gc/g1/g1HeapRegionManager.cpp b/src/hotspot/share/gc/g1/g1HeapRegionManager.cpp
index 0098839c1a4..be469b655f7 100644
--- a/src/hotspot/share/gc/g1/g1HeapRegionManager.cpp
+++ b/src/hotspot/share/gc/g1/g1HeapRegionManager.cpp
@@ -478,7 +478,7 @@ uint G1HeapRegionManager::find_contiguous_in_free_list(uint num_regions) {
 
 uint G1HeapRegionManager::find_contiguous_allow_expand(uint num_regions) {
   // Check if we can actually satisfy the allocation.
-  if (num_regions > available()) {
+  if (num_regions > (num_free_regions() + available())) {
     return G1_NO_HRM_INDEX;
   }
   // Find any candidate.