1 files changed, 1 insertions, 1 deletions

diff --git a/m4/ac_python_devel.m4 b/m4/ac_python_devel.m4
index 7cec10f..99ff7d0 100644
--- a/m4/ac_python_devel.m4
+++ b/m4/ac_python_devel.m4
@@ -172,7 +172,7 @@ $ac_distutils_result])
                 py_version=`$PYTHON -c "from distutils.sysconfig import *; \
                         from string import join; \
                         print join(get_config_vars('VERSION'))"`
-                if test "$py_version" == "[None]"; then
+                if test "$py_version" = "[None]"; then
                         if test -n "$PYTHON_VERSION"; then
                                 py_version=$PYTHON_VERSION
                         else