diff --git a/tools/releasetools/add_img_to_target_files.py b/tools/releasetools/add_img_to_target_files.py
index 7143775333..da7e11a93f 100644
--- a/tools/releasetools/add_img_to_target_files.py
+++ b/tools/releasetools/add_img_to_target_files.py
@@ -64,7 +64,7 @@ import verity_utils
 import ota_metadata_pb2
 
 from apex_utils import GetApexInfoFromTargetFiles
-from common import AddCareMapForAbOta
+from common import AddCareMapForAbOta, ZipDelete
 
 if sys.hexversion < 0x02070000:
   print("Python 2.7 or newer is required.", file=sys.stderr)
@@ -1034,9 +1034,10 @@ def OptimizeCompressedEntries(zipfile_path):
         if zinfo.compress_size > zinfo.file_size * 0.80 and zinfo.compress_type != zipfile.ZIP_STORED:
           entries_to_store.append(zinfo)
           zfp.extract(zinfo, tmpdir)
+    if len(entries_to_store) == 0:
+      return
     # Remove these entries, then re-add them as ZIP_STORED
-    common.RunAndCheckOutput(
-        ["zip", "-d", zipfile_path] + [entry.filename for entry in entries_to_store])
+    ZipDelete(zipfile_path, [entry.filename for entry in entries_to_store])
     with zipfile.ZipFile(zipfile_path, "a", allowZip64=True) as zfp:
       for entry in entries_to_store:
         zfp.write(os.path.join(tmpdir, entry.filename), entry.filename, compress_type=zipfile.ZIP_STORED)
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 686102a58d..850619940b 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -2818,6 +2818,9 @@ def ZipDelete(zip_filename, entries):
   """
   if isinstance(entries, str):
     entries = [entries]
+  # If list is empty, nothing to do
+  if not entries:
+    return
   cmd = ["zip", "-d", zip_filename] + entries
   RunAndCheckOutput(cmd)
 
diff --git a/tools/releasetools/sign_target_files_apks.py b/tools/releasetools/sign_target_files_apks.py
index 5b16d803cf..adba866371 100755
--- a/tools/releasetools/sign_target_files_apks.py
+++ b/tools/releasetools/sign_target_files_apks.py
@@ -1521,8 +1521,5 @@ def main(argv):
 if __name__ == '__main__':
   try:
     main(sys.argv[1:])
-  except common.ExternalError as e:
-    print("\n   ERROR: %s\n" % (e,))
-    raise
   finally:
     common.Cleanup()