diff --git a/common/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
index d6346913a..b5ead70aa 100644
--- a/common/json-schema-to-grammar.cpp
+++ b/common/json-schema-to-grammar.cpp
@@ -202,13 +202,13 @@ static void _generate_min_max_int(int min_value, int max_value, std::stringstrea
             }
             auto sub_len = from.length() - i - 1;
             if (sub_len > 0) {
-                out << "(";
                 auto from_sub = from.substr(i + 1);
                 auto to_sub = to.substr(i + 1);
                 auto sub_zeros = repeat("0", sub_len);
                 auto sub_nines = repeat("9", sub_len);
 
                 auto to_reached = false;
+                out << "(";
                 if (from_sub == sub_zeros) {
                     digit_range(from[i], to[i] - 1);
                     out << " ";