diff --git a/tests/benchmark-crypto-cipher.c b/tests/benchmark-crypto-cipher.c
index c6a40929e4e6..cf984434680d 100644
--- a/tests/benchmark-crypto-cipher.c
+++ b/tests/benchmark-crypto-cipher.c
@@ -59,7 +59,7 @@ static void test_cipher_speed(const void *opaque)
     total /= 1024 * 1024; /* to MB */
 
     g_print("cbc(aes128): ");
-    g_print("Testing chunk_size %ld bytes ", chunk_size);
+    g_print("Testing chunk_size %zu bytes ", chunk_size);
     g_print("done: %.2f MB in %.2f secs: ", total, g_test_timer_last());
     g_print("%.2f MB/sec\n", total / g_test_timer_last());
 
@@ -80,7 +80,7 @@ int main(int argc, char **argv)
 
     for (i = 512; i <= (64 * 1204); i *= 2) {
         memset(name, 0 , sizeof(name));
-        snprintf(name, sizeof(name), "/crypto/cipher/speed-%lu", i);
+        snprintf(name, sizeof(name), "/crypto/cipher/speed-%zu", i);
         g_test_add_data_func(name, (void *)i, test_cipher_speed);
     }
 
diff --git a/tests/benchmark-crypto-hash.c b/tests/benchmark-crypto-hash.c
index 6769d2a11bc5..122bfb6b85c7 100644
--- a/tests/benchmark-crypto-hash.c
+++ b/tests/benchmark-crypto-hash.c
@@ -41,7 +41,7 @@ static void test_hash_speed(const void *opaque)
 
     total /= 1024 * 1024; /* to MB */
     g_print("sha256: ");
-    g_print("Testing chunk_size %ld bytes ", chunk_size);
+    g_print("Testing chunk_size %zu bytes ", chunk_size);
     g_print("done: %.2f MB in %.2f secs: ", total, g_test_timer_last());
     g_print("%.2f MB/sec\n", total / g_test_timer_last());
 
@@ -59,7 +59,7 @@ int main(int argc, char **argv)
 
     for (i = 512; i <= (64 * 1204); i *= 2) {
         memset(name, 0 , sizeof(name));
-        snprintf(name, sizeof(name), "/crypto/hash/speed-%lu", i);
+        snprintf(name, sizeof(name), "/crypto/hash/speed-%zu", i);
         g_test_add_data_func(name, (void *)i, test_hash_speed);
     }
 
diff --git a/tests/benchmark-crypto-hmac.c b/tests/benchmark-crypto-hmac.c
index 72408be9875b..c30250df3ec2 100644
--- a/tests/benchmark-crypto-hmac.c
+++ b/tests/benchmark-crypto-hmac.c
@@ -56,7 +56,7 @@ static void test_hmac_speed(const void *opaque)
     total /= 1024 * 1024; /* to MB */
 
     g_print("hmac(sha256): ");
-    g_print("Testing chunk_size %ld bytes ", chunk_size);
+    g_print("Testing chunk_size %zu bytes ", chunk_size);
     g_print("done: %.2f MB in %.2f secs: ", total, g_test_timer_last());
     g_print("%.2f MB/sec\n", total / g_test_timer_last());
 
@@ -74,7 +74,7 @@ int main(int argc, char **argv)
 
     for (i = 512; i <= (64 * 1204); i *= 2) {
         memset(name, 0 , sizeof(name));
-        snprintf(name, sizeof(name), "/crypto/hmac/speed-%lu", i);
+        snprintf(name, sizeof(name), "/crypto/hmac/speed-%zu", i);
         g_test_add_data_func(name, (void *)i, test_hmac_speed);
     }