diff --git a/pupy/packages/all/pupyps.py b/pupy/packages/all/pupyps.py
index fe6da0aa..2504ec87 100644
--- a/pupy/packages/all/pupyps.py
+++ b/pupy/packages/all/pupyps.py
@@ -68,6 +68,7 @@ def psinfo(pids):
             pid: info
         })
 
+    psutil._pmap = {}
     return data
 
 def pstree():
@@ -118,6 +119,7 @@ def pstree():
     if 0 in tree and 0 in tree[0]:
         tree[0].remove(0)
 
+    psutil._pmap = {}
     return min(tree), tree, data
 
 def users():
@@ -173,6 +175,7 @@ def users():
 
         info[term.name][host].append(terminfo)
 
+    psutil._pmap = {}
     return info
 
 def connections():
@@ -202,6 +205,7 @@ def connections():
 
         connections.append(obj)
 
+    psutil._pmap = {}
     return connections
 
 def _tryint(x):