diff --git a/tests/test_backend/test_directx/test_preprocessor.py b/tests/test_backend/test_directx/test_preprocessor.py
index 5ff2afba..ce243216 100644
--- a/tests/test_backend/test_directx/test_preprocessor.py
+++ b/tests/test_backend/test_directx/test_preprocessor.py
@@ -1,5 +1,6 @@
 import pytest
 from DirectxLexer import HLSLLexer
+from crosstl.backend.Directx.DirectxLexer import HLSLLexer
 from DirectxParser import HLSLParser
 from DirectxCrossGLCodeGen import HLSLToCrossGLConverter