diff --git a/src/dawn/native/vulkan/BackendVk.cpp b/src/dawn/native/vulkan/BackendVk.cpp
index 870824f..e2ef5c6 100644
--- a/src/dawn/native/vulkan/BackendVk.cpp
+++ b/src/dawn/native/vulkan/BackendVk.cpp
@@ -157,7 +157,7 @@
     // We get to this line if no device was associated with the message. Crash so that the failure
     // is loud and makes tests fail in Debug.
     dawn::ErrorLog() << pCallbackData->pMessage;
-    UNREACHABLE();
+    ASSERT(false);
 
     return VK_FALSE;
 }