diff --git a/dom0/qmemman/qmemman.py b/dom0/qmemman/qmemman.py
index 8ec73715..b352d95a 100755
--- a/dom0/qmemman/qmemman.py
+++ b/dom0/qmemman/qmemman.py
@@ -50,7 +50,7 @@ class SystemState:
                 dict[string.rstrip(l2[0], ":")] = l2[1]
 
         try:
-            for i in ('MemFree', 'Buffers', 'Cached', 'SwapTotal', 'SwapFree'):
+            for i in ('MemTotal', 'MemFree', 'Buffers', 'Cached', 'SwapTotal', 'SwapFree'):
                 val = int(dict[i])*1024
                 if (val < 0):
                     return None
diff --git a/dom0/qmemman/qmemman_algo.py b/dom0/qmemman/qmemman_algo.py
index b0c9cd1e..c34a1f95 100755
--- a/dom0/qmemman/qmemman_algo.py
+++ b/dom0/qmemman/qmemman_algo.py
@@ -2,7 +2,7 @@ def is_suspicious(dom):
     ret = False
     if dom.meminfo['SwapTotal'] < dom.meminfo['SwapFree']:
         ret = True
-    if dom.memory_actual < dom.meminfo['MemFree'] + dom.meminfo['Cached'] + dom.meminfo['Buffers']:
+    if dom.meminfo['MemTotal'] < dom.meminfo['MemFree'] + dom.meminfo['Cached'] + dom.meminfo['Buffers']:
         ret = True
     if ret:
         print 'suspicious meminfo for domain', dom.id, 'mem actual', dom.memory_actual, dom.meminfo
@@ -17,7 +17,7 @@ def recalc_mem_used(domdict):
                 dom.meminfo = None
                 dom.mem_used = None
             else:
-                dom.mem_used =  dom.memory_actual - dom.meminfo['MemFree'] - dom.meminfo['Cached'] - dom.meminfo['Buffers'] + dom.meminfo['SwapTotal'] - dom.meminfo['SwapFree']
+                dom.mem_used =  dom.meminfo['MemTotal'] - dom.meminfo['MemFree'] - dom.meminfo['Cached'] - dom.meminfo['Buffers'] + dom.meminfo['SwapTotal'] - dom.meminfo['SwapFree']
 
 def prefmem(dom):
     if dom.meminfo_updated: