diff --git a/plume_d3d12.cpp b/plume_d3d12.cpp
index 2cdcf18..0cad80e 100644
--- a/plume_d3d12.cpp
+++ b/plume_d3d12.cpp
@@ -1383,6 +1383,11 @@ namespace plume {
             }
         }
 
+        if (waitableObject != NULL) {
+            CloseHandle(waitableObject);
+            waitableObject = NULL;
+        }
+
         if (d3d != nullptr) {
             d3d->Release();
         }