diff --git a/m4/python.m4 b/m4/python.m4
index db7b4822..56220ba2 100644
--- a/m4/python.m4
+++ b/m4/python.m4
@@ -35,16 +35,13 @@
 AC_DEFUN([AM_PATH_PYTHON],
  [
   dnl Find a Python interpreter.  Python versions prior to 2.0 are not
-  dnl supported. (2.0 was released on October 16, 2000).
+  dnl supported. (2.0 was released on October 16, 2000).  Python 3.0
+  dnl through to Python 3.3 are also not supported.
   m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
 [python2 python2.7 dnl
  python dnl
- dnl old listing was pointless since biundings only work from Python 3.4:
- dnl python3 python3.0 python3.1 python3.2 python3.3
- dnl move 3.7 to the front once 3.7.1 or 3.7.2 is released:
- dnl python3 python3.7 python3.6 python3.5 python3.4 python3.8])
- dnl until then:
- python3 python3.6 python3.5 python3.4 python3.7 python3.8])
+ python3 python3.6 python3.5 python3.4 python3.7  dnl
+ python3.8])
 
   AC_ARG_VAR([PYTHON], [the Python interpreter])