diff --git "a/sdk/lib/crt/stdio/file.c" "b/sdk/lib/crt/stdio/file.c"
index 0be80b86b28..b525896c9ab 100644
--- "a/sdk/lib/crt/stdio/file.c"
+++ "b/sdk/lib/crt/stdio/file.c"
@@ -1581,6 +1581,17 @@ __int64 CDECL _filelengthi64(int fd)
  */
 int CDECL _fileno(FILE* file)
 {
+  /* If we are not in a console window, then do not use
+   * STDOUT (1) or STDERR (2) file numbers */
+  if (!GetConsoleWindow())
+  {
+    if(file->_file==STDOUT_FILENO || file->_file == STDERR_FILENO)
+    {
+        return -1;
+    }
+
+  }
+
   TRACE(":FILE* (%p) fd (%d)\n",file,file->_file);
   return file->_file;
 }