diff --git a/hta/common/types.py b/hta/common/types.py
index ed594ac6..43db40d8 100644
--- a/hta/common/types.py
+++ b/hta/common/types.py
@@ -1,16 +1,9 @@
-from dataclasses import dataclass
 from enum import Enum
 from typing import Dict
 
 import pandas as pd
 
 
-@dataclass
-class OperationOutcome:
-    success: bool
-    reason: str
-
-
 class DeviceType(Enum):
     UNKNOWN = 0
     CPU = 1
diff --git a/hta/utils/checker.py b/hta/utils/checker.py
index 86eef05c..139c8f32 100644
--- a/hta/utils/checker.py
+++ b/hta/utils/checker.py
@@ -1,7 +1,12 @@
 import os
 import os.path
+from dataclasses import dataclass
 
-from hta.common.types import OperationOutcome
+
+@dataclass
+class OperationOutcome:
+    success: bool
+    reason: str
 
 
 def is_valid_directory(