diff --git a/launch_testing_ament_cmake/cmake/add_launch_test.cmake b/launch_testing_ament_cmake/cmake/add_launch_test.cmake
index e8277d7e3..8606de737 100644
--- a/launch_testing_ament_cmake/cmake/add_launch_test.cmake
+++ b/launch_testing_ament_cmake/cmake/add_launch_test.cmake
@@ -74,6 +74,11 @@ function(add_launch_test file)
 
   if(NOT _add_launch_test_PYTHON_EXECUTABLE)
     set(_add_launch_test_PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE}")
+    if(WIN32)
+      if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+        set(_add_launch_test_PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE_DEBUG}")
+      endif()
+    endif()
   endif()
 
   set(_file_name _file_name-NOTFOUND)