diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index e75ca4e14e..6de7f96d0a 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -110,7 +110,7 @@ function(curl_add_pytests _targetname _test_flags)
   endif()
   string(REPLACE " " ";" _test_flags_list "${_test_flags}")
   add_custom_target(${_targetname}
-    COMMAND pytest ${_test_flags_list} "${CMAKE_CURRENT_SOURCE_DIR}/http"
+    COMMAND pytest ${_test_flags_list} "${CMAKE_CURRENT_SOURCE_DIR}/http${_CURL_PYTEST}"
     DEPENDS "${_depends}"
     VERBATIM USES_TERMINAL
   )