diff --git a/test/unit/http.py b/test/unit/http.py
index 82a6bd6a..1a68ca3b 100644
--- a/test/unit/http.py
+++ b/test/unit/http.py
@@ -63,7 +63,7 @@ class TestHTTP(TestUnit):
         if 'raw' not in kwargs:
             req = ' '.join([start_str, url, http]) + crlf
 
-            if body is not b'':
+            if body != b'':
                 if isinstance(body, str):
                     body = body.encode()