diff --git a/src/gpu/dawn/GrDawnGpu.cpp b/src/gpu/dawn/GrDawnGpu.cpp
index f4756e7..b5f41c7 100644
--- a/src/gpu/dawn/GrDawnGpu.cpp
+++ b/src/gpu/dawn/GrDawnGpu.cpp
@@ -131,6 +131,8 @@
             fDevice.Tick();
         }
     }
+    fQueue = nullptr;
+    fDevice = nullptr;
     INHERITED::disconnect(type);
 }