diff --git a/tests/cd.cpp b/tests/cd.cpp
index 8b569b7..def2bdd 100644
--- a/tests/cd.cpp
+++ b/tests/cd.cpp
@@ -6,7 +6,7 @@
  *
 */
 
-#include "trompeloeil_doctest.h"
+#include "trompeloeil_doctest.hpp"
 #include "ast_commands.hpp"
 #include "parser.hpp"
 #include "static_schema.hpp"