diff --git a/test/osal-windows.cc b/test/osal-windows.cc
index b8cdb535..81f1da7f 100644
--- a/test/osal-windows.cc
+++ b/test/osal-windows.cc
@@ -268,9 +268,12 @@ int osal_actor_start(const actor_config &config, mdbx_pid_t &pid) {
                                   &exename_size))
     failure_perror("QueryFullProcessImageName()", GetLastError());
 
-  std::string cmdline = "test_mdbx.child ";
+  std::string cmdline = "$ ";
   ArgvQuote(cmdline, thunk_param(config));
 
+  if (cmdline.size() >= 32767)
+    return ERROR_BAD_LENGTH;
+
   PROCESS_INFORMATION ProcessInformation;
   if (!CreateProcessA(exename, const_cast<char *>(cmdline.c_str()),
                       NULL, // Retuned process handle is not inheritable.