diff --git a/rhodecode/lib/pidlock.py b/rhodecode/lib/pidlock.py
--- a/rhodecode/lib/pidlock.py
+++ b/rhodecode/lib/pidlock.py
@@ -11,7 +11,7 @@ from rhodecode import __platform__, PLAT
 if __platform__ in PLATFORM_WIN:
     import ctypes
 
-    def kill(pid):
+    def kill(pid, sig):
         """kill function for Win32"""
         kernel32 = ctypes.windll.kernel32
         handle = kernel32.OpenProcess(1, 0, pid)