diff --git a/libos/test/fs/test_enc.py b/libos/test/fs/test_enc.py
index f731f7b47a..c62d70875d 100644
--- a/libos/test/fs/test_enc.py
+++ b/libos/test/fs/test_enc.py
@@ -67,8 +67,8 @@ def test_000_gen_key(self):
         # test random key generation
         key_path = os.path.join(self.TEST_DIR, 'tmpkey')
         args = ['gen-key', '-w', key_path]
-        stdout, _ = self.__pf_crypt(args)
-        self.assertIn('Wrap key saved to: ' + key_path, stdout)
+        _, stderr = self.__pf_crypt(args)
+        self.assertIn('Wrap key saved to: ' + key_path, stderr)
         self.assertEqual(os.path.getsize(key_path), 16)
         os.remove(key_path)
 
diff --git a/tools/sgx/common/util.h b/tools/sgx/common/util.h
index 335b6fe6d9..a375f172ed 100644
--- a/tools/sgx/common/util.h
+++ b/tools/sgx/common/util.h
@@ -30,12 +30,12 @@ extern endianness_t g_endianness;
 #define DBG(fmt, ...)                                 \
     do {                                              \
         if (g_verbose)                                \
-            dprintf(g_stdout_fd, fmt, ##__VA_ARGS__); \
+            dprintf(g_stderr_fd, fmt, ##__VA_ARGS__); \
     } while (0)
 
 #define INFO(fmt, ...)                            \
     do {                                          \
-        dprintf(g_stdout_fd, fmt, ##__VA_ARGS__); \
+        dprintf(g_stderr_fd, fmt, ##__VA_ARGS__); \
     } while (0)
 
 #define ERROR(fmt, ...)                                                \