diff --git a/redis/commands/core.py b/redis/commands/core.py
index f97724d030..8fbd0d9104 100644
--- a/redis/commands/core.py
+++ b/redis/commands/core.py
@@ -97,6 +97,7 @@ def acl_genpass(self, bits: Union[int, None] = None, **kwargs) -> ResponseT:
                 b = int(bits)
                 if b < 0 or b > 4096:
                     raise ValueError
+                pieces.append(b)
             except ValueError:
                 raise DataError(
                     "genpass optionally accepts a bits argument, between 0 and 4096."
diff --git a/tests/test_commands.py b/tests/test_commands.py
index 6660c2c6b0..b2d7c1b9ed 100644
--- a/tests/test_commands.py
+++ b/tests/test_commands.py
@@ -201,8 +201,9 @@ def test_acl_genpass(self, r):
             r.acl_genpass(-5)
             r.acl_genpass(5555)
 
-        r.acl_genpass(555)
+        password = r.acl_genpass(555)
         assert isinstance(password, (str, bytes))
+        assert len(password) == 139
 
     @skip_if_server_version_lt("7.0.0")
     @skip_if_redis_enterprise()