diff --git a/ext/mysqli/mysqli.c b/ext/mysqli/mysqli.c
index 1c933d9ca42..ff1638d7d55 100644
--- a/ext/mysqli/mysqli.c
+++ b/ext/mysqli/mysqli.c
@@ -801,7 +801,9 @@ PHP_MINIT_FUNCTION(mysqli)
 	REGISTER_LONG_CONSTANT("MYSQLI_TYPE_CHAR", FIELD_TYPE_CHAR, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("MYSQLI_TYPE_INTERVAL", FIELD_TYPE_INTERVAL, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("MYSQLI_TYPE_GEOMETRY", FIELD_TYPE_GEOMETRY, CONST_CS | CONST_PERSISTENT);
-
+#ifdef FIELD_TYPE_JSON
+	REGISTER_LONG_CONSTANT("MYSQLI_TYPE_JSON", FIELD_TYPE_JSON, CONST_CS | CONST_PERSISTENT);
+#endif
 #if MYSQL_VERSION_ID > 50002 || defined(MYSQLI_USE_MYSQLND)
 	REGISTER_LONG_CONSTANT("MYSQLI_TYPE_NEWDECIMAL", FIELD_TYPE_NEWDECIMAL, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("MYSQLI_TYPE_BIT", FIELD_TYPE_BIT, CONST_CS | CONST_PERSISTENT);