diff --git a/lib/mcpu.py b/lib/mcpu.py
index 70816a593ebfece0cba0f1081f5ab312b6c7dbbd..9804d2ddfbd9430ecfc3c150f2b36435faf6b593 100644
--- a/lib/mcpu.py
+++ b/lib/mcpu.py
@@ -317,11 +317,10 @@ class HooksMaster(object):
 
     This is the main function of the HookMaster.
 
-    Args:
-      phase: the hooks phase to run
-
-    Returns:
-      the result of the hooks multi-node rpc call
+    @param phase: one of L{constants.HOOKS_PHASE_POST} or
+        L{constants.HOOKS_PHASE_PRE}; it denotes the hooks phase
+    @return: the processed results of the hooks multi-node rpc call
+    @raise errors.HooksFailure: on communication failure to the nodes
 
     """
     if not self.node_list[phase]: