diff --git a/controller.py b/controller.py
index 91a5166..f3bd1e0 100755
--- a/controller.py
+++ b/controller.py
@@ -534,7 +534,7 @@ def controller(
     goldenrun_data = {}
 
     hdf5_file = Path(hdf5path)
-    if hdf5_file.is_file():
+    if hdf5_file.is_file() and not args.overwrite:
         clogger.info("HDF5 file already exits")
         # backup_raw_faultlist is currently not used.
         # Keeping it for possible future features.
@@ -564,16 +564,10 @@ def controller(
             if not args.append:
                 overwrite_faults = True
         else:
-            clogger.warning("Backup does not match, running goldenrun!")
-            goldenrun = True
-
-            print_fault = True
-            print_config = True
-            print_goldenrun = True
-
-            if hdf5mode == "a":
-                print_config = False
-                print_goldenrun = False
+            clogger.warning(
+                "Backup does not match, run with overwrite flag to overwrite!"
+            )
+            return config_qemu
 
     if goldenrun:
         raw_faultlist = copy.deepcopy(faultlist)
@@ -811,6 +805,13 @@ def get_argument_parser():
         action="store_true",
         required=False,
     )
+    parser.add_argument(
+        "--overwrite",
+        "-o",
+        help="Overwrite the existing file",
+        action="store_true",
+        required=False,
+    )
     return parser