diff --git a/src/examples/benchmark.c b/src/examples/benchmark.c
index 1abdad24..37e1b4f8 100644
--- a/src/examples/benchmark.c
+++ b/src/examples/benchmark.c
@@ -176,6 +176,6 @@ main (int argc, char *const *argv)
   MHD_destroy_response (response);
   for (i = 0; i < SMALL; i++)
     if (0 != small_deltas[i])
-      fprintf (stdout, "D: %d %u\n", i, small_deltas[i]);
+      fprintf (stdout, "D: %u %u\n", i, small_deltas[i]);
   return 0;
 }
diff --git a/src/examples/benchmark_https.c b/src/examples/benchmark_https.c
index ae7e074f..9553d434 100644
--- a/src/examples/benchmark_https.c
+++ b/src/examples/benchmark_https.c
@@ -240,6 +240,6 @@ main (int argc, char *const *argv)
   MHD_destroy_response (response);
   for (i = 0; i < SMALL; i++)
     if (0 != small_deltas[i])
-      fprintf (stdout, "D: %d %u\n", i, small_deltas[i]);
+      fprintf (stdout, "D: %u %u\n", i, small_deltas[i]);
   return 0;
 }