diff --git a/tests/php-unix.ini b/tests/php-unix.ini
index 8ee16968..3cdf0954 100644
--- a/tests/php-unix.ini
+++ b/tests/php-unix.ini
@@ -1,6 +1,5 @@
 [PHP]
 ;extension_dir = "./ext"
-extension=json.so
 
 [Zend]
 ;zend_extension="./ext/zend_extension"