diff --git a/scripts/phpize.m4 b/scripts/phpize.m4
index 384d44cd9bb..f65796b4947 100644
--- a/scripts/phpize.m4
+++ b/scripts/phpize.m4
@@ -68,6 +68,8 @@ AC_PREFIX_DEFAULT()
 
 PHP_PROG_RE2C
 PHP_PROG_AWK
+
+PHP_SETUP_ICU
     
 sinclude(config.m4)