diff --git a/markdown.php b/markdown.php
index 94b4724..0a6ffd6 100644
--- a/markdown.php
+++ b/markdown.php
@@ -382,6 +382,7 @@ class markdown
     if ($this->debug === false)  return;
     $trace = debug_backtrace();
     $back = reset ($trace);
-    file_put_contents ("/tmp/debug", "[".$back["line"]."] $msg\n", FILE_APPEND);
+    file_put_contents ("/tmp/debugMD", "[".$back["line"]."] $msg\n",
+                       FILE_APPEND);
   }
 }