diff --git a/m4/python.m4 b/m4/python.m4
index f8a759c6..2ceaf737 100644
--- a/m4/python.m4
+++ b/m4/python.m4
@@ -42,7 +42,7 @@ AC_DEFUN([AM_PATH_PYTHON],
   m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
 [python2 python2.7 dnl
  python dnl
- python3 python3.7 python3.6 python3.5 python3.4 dnl python3.8
+ python3 python3.8 python3.7 python3.6 python3.5 python3.4
  ])
 
   AC_ARG_VAR([PYTHON], [the Python interpreter])