diff --git a/libcxx/utils/run.py b/libcxx/utils/run.py
index e88fff12824821..cdfa2387b22d57 100755
--- a/libcxx/utils/run.py
+++ b/libcxx/utils/run.py
@@ -23,12 +23,9 @@ def main():
     parser.add_argument('--execdir', type=str, required=True)
     parser.add_argument('--codesign_identity', type=str, required=False, default=None)
     parser.add_argument('--env', type=str, nargs='*', required=False, default=dict())
-    (args, remaining) = parser.parse_known_args(sys.argv[1:])
-
-    if len(remaining) < 2:
-        sys.stderr.write('Missing actual commands to run')
-        exit(1)
-    commandLine = remaining[1:] # Skip the '--'
+    parser.add_argument("command", nargs=argparse.ONE_OR_MORE)
+    args = parser.parse_args()
+    commandLine = args.command
 
     # Do any necessary codesigning.
     if args.codesign_identity:
diff --git a/libcxx/utils/ssh.py b/libcxx/utils/ssh.py
index f74ed785bbbfc8..876e35460dc7d8 100755
--- a/libcxx/utils/ssh.py
+++ b/libcxx/utils/ssh.py
@@ -29,13 +29,9 @@ def main():
     parser.add_argument('--execdir', type=str, required=True)
     parser.add_argument('--codesign_identity', type=str, required=False, default=None)
     parser.add_argument('--env', type=str, nargs='*', required=False, default=dict())
-    (args, remaining) = parser.parse_known_args(sys.argv[1:])
-
-    if len(remaining) < 2:
-        sys.stderr.write('Missing actual commands to run')
-        return 1
-
-    commandLine = remaining[1:] # Skip the '--'
+    parser.add_argument("command", nargs=argparse.ONE_OR_MORE)
+    args = parser.parse_args()
+    commandLine = args.command
 
     ssh = lambda command: ['ssh', '-oBatchMode=yes', args.host, command]
     scp = lambda src, dst: ['scp', '-q', '-oBatchMode=yes', src, '{}:{}'.format(args.host, dst)]