--- a/tests/ucxtest.c	Wed Dec 24 12:13:59 2025 +0100
+++ b/tests/ucxtest.c	Wed Dec 24 15:05:36 2025 +0100
@@ -118,7 +118,7 @@
             cx_test_suite_printf()
     );
     printf("=== OVERALL RESULT ===\n");
-    printf("  Suites:  %5lu\n  Tests:   %5u\n  Success: %5u\n  Failure: %5u\n",
+    printf("  Suites:  %5zu\n  Tests:   %5u\n  Success: %5u\n  Failure: %5u\n",
            cx_nmemb(test_suites), success + failure, success, failure);
     free_test_suites;