diff --git a/python/tvm/ir/transform.py b/python/tvm/ir/transform.py
index 4519fb630c2a..a35feb30dccb 100644
--- a/python/tvm/ir/transform.py
+++ b/python/tvm/ir/transform.py
@@ -82,7 +82,7 @@ def __init__(self,
         elif isinstance(fallback_device, TVMContext):
             fallback_device = fallback_device.device_type
         if not isinstance(fallback_device, int):
-            raise TypeError("required_pass is expected to be the type of " +
+            raise TypeError("fallback_device is expected to be the type of " +
                             "int/str/TVMContext.")
 
         required = list(required_pass) if required_pass else []