diff --git a/config_convert/validators/syntax.py b/config_convert/validators/syntax.py
index fa4a3eb..5b75488 100644
--- a/config_convert/validators/syntax.py
+++ b/config_convert/validators/syntax.py
@@ -2,8 +2,7 @@
 
 import json
 import re
-from pathlib import Path
-from typing import Any, Optional, Tuple
+from typing import Optional, Tuple
 
 import yaml
 
@@ -104,9 +103,9 @@ def validate_env(data: str) -> Tuple[bool, Optional[ValidationError]]:
         if not stripped or stripped.startswith("#"):
             continue
         if not line.strip() == line:
-            return False, ValidationError(f"Invalid KEY=value format", line_num)
+            return False, ValidationError("Invalid KEY=value format", line_num)
         if not ENV_LINE_PATTERN.match(line):
-            return False, ValidationError(f"Invalid KEY=value format", line_num)
+            return False, ValidationError("Invalid KEY=value format", line_num)
     return True, None