diff --git a/ext/json/JSON_parser.c b/ext/json/JSON_parser.c
index 9de481fc1ea..02cfa335c3f 100644
--- a/ext/json/JSON_parser.c
+++ b/ext/json/JSON_parser.c
@@ -278,7 +278,7 @@ static void json_create_zval(zval **z, smart_str *buf, int type TSRMLS_DC) /* {{
 
 	if (type == IS_LONG) {
 		double d = zend_strtod(buf->c, NULL);
-		if (d > LONG_MAX || d < -LONG_MAX) {
+		if (d > LONG_MAX || d < LONG_MIN) {
 			ZVAL_DOUBLE(*z, d);
 		} else {
 			ZVAL_LONG(*z, (long)d);