diff --git a/core/src/fxcrt/fx_basic_bstring_unittest.cpp b/core/src/fxcrt/fx_basic_bstring_unittest.cpp
index 030b6ae..53427e3 100644
--- a/core/src/fxcrt/fx_basic_bstring_unittest.cpp
+++ b/core/src/fxcrt/fx_basic_bstring_unittest.cpp
@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 #include "testing/gtest/include/gtest/gtest.h"
-#include "testing/fx_string_testhelpers.h"
+#include "../../../testing/fx_string_testhelpers.h"
 #include "../../include/fxcrt/fx_basic.h"
 
 TEST(fxcrt, ByteStringCNull) {