diff --git a/runtime/vm/dart.cc b/runtime/vm/dart.cc
index 53250c5b75a..cf63124cc08 100644
--- a/runtime/vm/dart.cc
+++ b/runtime/vm/dart.cc
@@ -861,7 +861,9 @@ ErrorPtr Dart::InitializeIsolate(const uint8_t* snapshot_data,
   }
 
   Object::VerifyBuiltinVtables();
-  DEBUG_ONLY(IG->heap()->Verify(kForbidMarked));
+  if (T->isolate()->origin_id() == 0) {
+    DEBUG_ONLY(IG->heap()->Verify(kForbidMarked));
+  }
 
 #if defined(DART_PRECOMPILED_RUNTIME)
   const bool kIsAotRuntime = true;
diff --git a/runtime/vm/dart_api_impl.cc b/runtime/vm/dart_api_impl.cc
index 842bc8f7771..2e26b486c42 100644
--- a/runtime/vm/dart_api_impl.cc
+++ b/runtime/vm/dart_api_impl.cc
@@ -1499,7 +1499,9 @@ DART_EXPORT void Dart_ShutdownIsolate() {
     StackZone zone(T);
     HandleScope handle_scope(T);
 #if defined(DEBUG)
-    T->isolate_group()->ValidateConstants();
+    if (T->isolate()->origin_id() == 0) {
+      T->isolate_group()->ValidateConstants();
+    }
 #endif
     Dart::RunShutdownCallback();
   }