diff --git a/v2.5/toolkit/configure.ac b/v2.5/toolkit/configure.ac
index fe58d7a31d2126ffdae08a13d965adf95cd5a5e0..688b2208ebea5c51e38a82c857eafd91cad6d20c 100644
--- a/v2.5/toolkit/configure.ac
+++ b/v2.5/toolkit/configure.ac
@@ -38,7 +38,6 @@ AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_F77([gfortran g77])
 AC_PROG_FC([gfortran g77])
-AC_CONFIG_MACRO_DIR([m4])
 #case $FC in
 #  gfortran) AC_SUBST([HAVE_GFORTRAN], [yes])
 #  g77) AC_SUBST([HAVE_G77], [yes])
@@ -636,7 +635,7 @@ AC_ARG_ENABLE([pyext3],
         [enable_pyext3="no"])
 # Basic Python checks
 if test "x$enable_pyext3" = "xyes"; then
-   AM_PATH_PYTHON([3])
+   AM_PATH_PYTHON(['3'])
    AX_PYTHON_DEVEL
 else
    if test "x$enable_pyext" = "xyes"; then