diff --git a/test/test-get-memory.c b/test/test-get-memory.c
index 722bc774..2396939b 100644
--- a/test/test-get-memory.c
+++ b/test/test-get-memory.c
@@ -26,7 +26,9 @@ TEST_IMPL(get_memory) {
   uint64_t free_mem = uv_get_free_memory();
   uint64_t total_mem = uv_get_total_memory();
 
-  printf("free_mem=%zu, total_mem=%zu\n", (size_t)free_mem, (size_t)total_mem);
+  printf("free_mem=%llu, total_mem=%llu\n",
+         (unsigned long long) free_mem,
+         (unsigned long long) total_mem);
 
   ASSERT(free_mem > 0);
   ASSERT(total_mem > 0);
diff --git a/test/test-platform-output.c b/test/test-platform-output.c
index fe7b3060..008d14fb 100644
--- a/test/test-platform-output.c
+++ b/test/test-platform-output.c
@@ -36,39 +36,42 @@ TEST_IMPL(platform_output) {
 
   err = uv_get_process_title(buffer, sizeof(buffer));
   ASSERT(UV_OK == err.code);
-  fprintf(stderr, "uv_get_process_title: %s\n", buffer);
+  printf("uv_get_process_title: %s\n", buffer);
 
   err = uv_resident_set_memory(&rss);
   ASSERT(UV_OK == err.code);
-  fprintf(stderr, "uv_resident_set_memory: %zu\n", rss);
+  printf("uv_resident_set_memory: %llu\n", (unsigned long long) rss);
 
   err = uv_uptime(&uptime);
   ASSERT(UV_OK == err.code);
   ASSERT(uptime > 0);
-  fprintf(stderr, "uv_uptime: %f\n", uptime);
+  printf("uv_uptime: %f\n", uptime);
 
   err = uv_cpu_info(&cpus, &count);
   ASSERT(UV_OK == err.code);
 
-  fprintf(stderr, "uv_cpu_info:\n");
+  printf("uv_cpu_info:\n");
   for (i = 0; i < count; i++) {
-    fprintf(stderr, "  model: %s\n", cpus[i].model);
-    fprintf(stderr, "  speed: %d\n", cpus[i].speed);
-    fprintf(stderr, "  times.sys: %zu\n", (size_t)cpus[i].cpu_times.sys);
-    fprintf(stderr, "  times.user: %zu\n", (size_t)cpus[i].cpu_times.user);
-    fprintf(stderr, "  times.idle: %zu\n", (size_t)cpus[i].cpu_times.idle);
-    fprintf(stderr, "  times.irq: %zu\n", (size_t)cpus[i].cpu_times.irq);
-    fprintf(stderr, "  times.nice: %zu\n", (size_t)cpus[i].cpu_times.nice);
+    printf("  model: %s\n", cpus[i].model);
+    printf("  speed: %d\n", cpus[i].speed);
+    printf("  times.sys: %llu\n", (unsigned long long) cpus[i].cpu_times.sys);
+    printf("  times.user: %llu\n",
+           (unsigned long long) cpus[i].cpu_times.user);
+    printf("  times.idle: %llu\n",
+           (unsigned long long) cpus[i].cpu_times.idle);
+    printf("  times.irq: %llu\n",  (unsigned long long) cpus[i].cpu_times.irq);
+    printf("  times.nice: %llu\n",
+           (unsigned long long) cpus[i].cpu_times.nice);
   }
   uv_free_cpu_info(cpus, count);
 
   err = uv_interface_addresses(&interfaces, &count);
   ASSERT(UV_OK == err.code);
 
-  fprintf(stderr, "uv_interface_addresses:\n");
+  printf("uv_interface_addresses:\n");
   for (i = 0; i < count; i++) {
-    fprintf(stderr, "  name: %s\n", interfaces[i].name);
-    fprintf(stderr, "  internal: %d\n", interfaces[i].is_internal);
+    printf("  name: %s\n", interfaces[i].name);
+    printf("  internal: %d\n", interfaces[i].is_internal);
 
     if (interfaces[i].address.address4.sin_family == AF_INET) {
       uv_ip4_name(&interfaces[i].address.address4, buffer, sizeof(buffer));
@@ -76,7 +79,7 @@ TEST_IMPL(platform_output) {
       uv_ip6_name(&interfaces[i].address.address6, buffer, sizeof(buffer));
     }
 
-    fprintf(stderr, "  address: %s\n", buffer);
+    printf("  address: %s\n", buffer);
   }
   uv_free_interface_addresses(interfaces, count);