diff --git a/rtc_base/openssl_stream_adapter.cc b/rtc_base/openssl_stream_adapter.cc
index e80efd1..db236d9 100644
--- a/rtc_base/openssl_stream_adapter.cc
+++ b/rtc_base/openssl_stream_adapter.cc
@@ -1177,7 +1177,9 @@
 }
 
 void OpenSSLStreamAdapter::EnableTimeCallbackForTesting() {
+#ifdef OPENSSL_IS_BORINGSSL
   g_use_time_callback_for_testing = true;
+#endif
 }
 
 }  // namespace rtc