diff --git a/src/coreclr/gc/gc.cpp b/src/coreclr/gc/gc.cpp
index 453cff7b31e921..33d6dcd78dfbb6 100644
--- a/src/coreclr/gc/gc.cpp
+++ b/src/coreclr/gc/gc.cpp
@@ -44354,14 +44354,15 @@ CObjectHeader* gc_heap::allocate_uoh_object (size_t jsize, uint32_t flags, int g
         uint8_t* current_lowest_address = background_saved_lowest_address;
         uint8_t* current_highest_address = background_saved_highest_address;
 
-        if ((result < current_highest_address) && (result >= current_lowest_address))
-        {
-            dprintf (3, ("Clearing mark bit at address %zx",
-                     (size_t)(&mark_array [mark_word_of (result)])));
+        //if ((result < current_highest_address) && (result >= current_lowest_address))
+        //{
+        //    dprintf (3, ("Clearing mark bit at address %zx",
+        //             (size_t)(&mark_array [mark_word_of (result)])));
 
-            mark_array_clear_marked (result);
-        }
-        if (current_c_gc_state != c_gc_state_free)
+        //    mark_array_clear_marked (result);
+        //}
+        //if (current_c_gc_state != c_gc_state_free)
+        if (current_c_gc_state == c_gc_state_planning)
         {
             dprintf (3, ("Concurrent allocation of a large object %zx",
                         (size_t)obj));