diff --git a/configure b/configure
index 8ca3fe0..e6fc4d6 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 78962 .
+# From configure.in Revision: 78964 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 2.7.
 #
@@ -4596,7 +4596,7 @@
 # tweak OPT based on compiler and platform, only if the user didn't set
 # it on the command line
 
-if test "${OPT-unset}" == "unset"
+if test "${OPT-unset}" = "unset"
 then
     case $GCC in
     yes)
diff --git a/configure.in b/configure.in
index 31f51ef..9773e8c 100644
--- a/configure.in
+++ b/configure.in
@@ -881,7 +881,7 @@
 # tweak OPT based on compiler and platform, only if the user didn't set
 # it on the command line
 AC_SUBST(OPT)
-if test "${OPT-unset}" == "unset"
+if test "${OPT-unset}" = "unset"
 then
     case $GCC in
     yes)