diff --git a/sync/cli/Main.py b/sync/cli/Main.py
index e9fc8ff..f59fee6 100644
--- a/sync/cli/Main.py
+++ b/sync/cli/Main.py
@@ -52,9 +52,6 @@ def exec(cls) -> int:
         parser = Parameters.generate_parser()
         cls._args = SafeArgs(parser.parse_args())
 
-        if cls._args.debug:
-            os.environ["REPO_UTIL_DEBUG"] = "1"
-
         code = cls._check_args()
         if code == cls.CODE_FAILURE:
             if cls._args.cmd is None:
diff --git a/sync/cli/Parameters.py b/sync/cli/Parameters.py
index d9ec699..7c9db37 100644
--- a/sync/cli/Parameters.py
+++ b/sync/cli/Parameters.py
@@ -414,12 +414,6 @@ def add_parser_env(cls, p, add_quiet=False):
                 help="Show only error logs (piped through stderr)."
             )
 
-        env.add_argument(
-            "--debug",
-            action="store_true",
-            help="Show full error stack, same as 'export REPO_UTIL_DEBUG=1'."
-        )
-
         return env
 
     @classmethod
diff --git a/sync/error/Result.py b/sync/error/Result.py
index e5002fa..69e9073 100644
--- a/sync/error/Result.py
+++ b/sync/error/Result.py
@@ -1,5 +1,3 @@
-import os
-import traceback
 from typing import Optional, Any, Callable
 
 
@@ -27,9 +25,6 @@ def wrapper(*args, **kwargs):
                     value = func(*args, **kwargs)
                     return Result(value=value)
                 except BaseException as err:
-                    if os.getenv("REPO_UTIL_DEBUG") == "1":
-                        error_traceback = traceback.format_exc()
-                        err = RuntimeError(error_traceback)
                     return Result(error=err)
 
             return wrapper
diff --git a/sync/model/LocalModule.py b/sync/model/LocalModule.py
index 657aeda..e2a2ce7 100644
--- a/sync/model/LocalModule.py
+++ b/sync/model/LocalModule.py
@@ -1,4 +1,3 @@
-import os
 from zipfile import ZipFile
 
 from .AttrDict import AttrDict
@@ -28,12 +27,7 @@ def load(cls, file):
 
             zipfile.read("META-INF/com/google/android/update-binary")
         except BaseException:
-            if os.getenv("REPO_UTIL_DEBUG") == "1":
-                filenames = [f.filename for f in zipfile.filelist]
-                msg = "\n".join(filenames)
-            else:
-                msg = f"{file.name} is not a magisk module"
-
+            msg = f"{file.name} is not a magisk module"
             raise MagiskModuleError(msg)
 
         try: