diff --git a/folly/testing/TestUtil.cpp b/folly/testing/TestUtil.cpp
index cadf8757f..3b756bbed 100644
--- a/folly/testing/TestUtil.cpp
+++ b/folly/testing/TestUtil.cpp
@@ -38,6 +38,8 @@
 // in various headers that we include.
 #include <boost/regex.hpp>
 
+#include "tools/cpp/runfiles/runfiles.h"
+
 namespace folly {
 namespace test {
 
@@ -236,10 +238,15 @@ fs::path find_resource(const std::string& resource) {
   if (pos == std::string::npos) {
     throw std::invalid_argument("invalid: " + resource);
   }
-  auto const ext = folly::ext::test_find_resource;
-  auto fn = ext //
-      ? fs::path(ext(resource)) // hooked, eg via internal extension
-      : fs::executable_path().parent_path() / resource; // current cmake build
+
+  using bazel::tools::cpp::runfiles::Runfiles;
+  std::string error;
+  std::unique_ptr<Runfiles> runfiles(Runfiles::CreateForTest(BAZEL_CURRENT_REPOSITORY, &error));
+  if (runfiles == nullptr) {
+    throw std::runtime_error("error initializing bazel runfiles: " + error);
+  }
+  const fs::path fn = runfiles->Rlocation(std::string("folly/") + resource);
+
   if (!fs::exists(fn)) {
     throw std::runtime_error("missing: " + resource);
   }