diff --git a/actionlib_msgs/cmake/actionlib_msgs-extras.cmake.em b/actionlib_msgs/cmake/actionlib_msgs-extras.cmake.em
index 16d57da8..ff310d98 100644
--- a/actionlib_msgs/cmake/actionlib_msgs-extras.cmake.em
+++ b/actionlib_msgs/cmake/actionlib_msgs-extras.cmake.em
@@ -64,7 +64,7 @@ macro(add_action_files)
     stamp(${actionfile})
 
     if(${actionfile} IS_NEWER_THAN ${MESSAGE_DIR}/${ACTION_SHORT_NAME}Action.msg)
-      safe_execute_process(COMMAND ${CATKIN_ENV} ${GENACTION_BIN} ${actionfile} -o ${MESSAGE_DIR})
+      safe_execute_process(COMMAND ${CATKIN_ENV} ${PYTHON_EXECUTABLE} ${GENACTION_BIN} ${actionfile} -o ${MESSAGE_DIR})
     endif()
 
     add_message_files(