diff --git a/src/stats.c b/src/stats.c
index 89d0e103..03eafb66 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -359,9 +359,9 @@ static void _mi_stats_print(mi_stats_t* stats, mi_output_fun* out0, void* arg0)
   size_t peak_commit;
   size_t page_faults;
   mi_process_info(&elapsed, &user_time, &sys_time, &current_rss, &peak_rss, &current_commit, &peak_commit, &page_faults);
-  _mi_fprintf(out, arg, "%10s: %5ld.%03ld s\n", "elapsed", elapsed/1000, elapsed%1000);
-  _mi_fprintf(out, arg, "%10s: user: %ld.%03ld s, system: %ld.%03ld s, faults: %lu, rss: ", "process",
-              user_time/1000, user_time%1000, sys_time/1000, sys_time%1000, (unsigned long)page_faults );
+  _mi_fprintf(out, arg, "%10s: %5zu.%03zu s\n", "elapsed", elapsed/1000, elapsed%1000);
+  _mi_fprintf(out, arg, "%10s: user: %zu.%03zu s, system: %zu.%03zu s, faults: %zu, rss: ", "process",
+              user_time/1000, user_time%1000, sys_time/1000, sys_time%1000, page_faults );
   mi_printf_amount((int64_t)peak_rss, 1, out, arg, "%s");
   if (peak_commit > 0) {
     _mi_fprintf(out, arg, ", commit: ");