diff --git a/gin/shell_runner_unittest.cc b/gin/shell_runner_unittest.cc
index 07ab678..7134de1 100644
--- a/gin/shell_runner_unittest.cc
+++ b/gin/shell_runner_unittest.cc
@@ -10,6 +10,10 @@
 #include "gin/public/isolate_holder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+#include "gin/public/isolate_holder.h"
+#endif
+
 using v8::Isolate;
 using v8::Object;
 using v8::Script;
@@ -20,6 +24,10 @@
 TEST(RunnerTest, Run) {
   std::string source = "this.result = 'PASS';\n";
 
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+  gin::IsolateHolder::LoadV8Snapshot();
+#endif
+
   gin::IsolateHolder::Initialize(gin::IsolateHolder::kStrictMode,
                                  gin::ArrayBufferAllocator::SharedInstance());
   gin::IsolateHolder instance;