diff --git a/mpc.c b/mpc.c
index 662ac53..b9e077c 100644
--- a/mpc.c
+++ b/mpc.c
@@ -641,7 +641,7 @@ char *mpc_err_string(mpc_err_t *x) {
   }
 
   mpc_err_string_cat(buffer, &pos, &max,
-    "%s:%i:%i: error: expected ", x->filename, x->state.row+1, x->state.col+1);
+    "%s:%li:%li: error: expected ", x->filename, x->state.row+1, x->state.col+1);
 
   if (x->expected_num == 0) { mpc_err_string_cat(buffer, &pos, &max, "ERROR: NOTHING EXPECTED"); }
   if (x->expected_num == 1) { mpc_err_string_cat(buffer, &pos, &max, "%s", x->expected[0]); }