diff --git a/tools/process_registry.py b/tools/process_registry.py
index 3a274eaa3d..2dbcdd1505 100644
--- a/tools/process_registry.py
+++ b/tools/process_registry.py
@@ -334,7 +334,7 @@ class ProcessRegistry:
                 pty_env = _sanitize_subprocess_env(os.environ, env_vars)
                 pty_env["PYTHONUNBUFFERED"] = "1"
                 pty_proc = _PtyProcessCls.spawn(
-                    [user_shell, "-lic", command],
+                    [user_shell, "-lic", f"set +m; {command}"],
                     cwd=session.cwd,
                     env=pty_env,
                     dimensions=(30, 120),
@@ -375,7 +375,7 @@ class ProcessRegistry:
         bg_env = _sanitize_subprocess_env(os.environ, env_vars)
         bg_env["PYTHONUNBUFFERED"] = "1"
         proc = subprocess.Popen(
-            [user_shell, "-lic", command],
+            [user_shell, "-lic", f"set +m; {command}"],
             text=True,
             cwd=session.cwd,
             env=bg_env,