diff --git a/tryton/gui/main.py b/tryton/gui/main.py
index cddeed7793..4bb40f11aa 100644
--- a/tryton/gui/main.py
+++ b/tryton/gui/main.py
@@ -1141,7 +1141,8 @@ class Main(object):
             return ([], [])
 
     def sig_login(self, widget=None, dbname=False, res=None):
-        self.sig_logout(widget, disconnect=False)
+        if not self.sig_logout(widget, disconnect=False):
+            return
         if not res:
             try:
                 dblogin = DBLogin(self.window)
diff --git a/tryton/ipc.py b/tryton/ipc.py
index 85d0cae441..3f28f198a2 100644
--- a/tryton/ipc.py
+++ b/tryton/ipc.py
@@ -113,7 +113,10 @@ class FIFOServer(IPCServer):
         fifo = os.fdopen(os.open(self.filename, os.O_RDONLY|os.O_NONBLOCK))
         data = ''
         while self.running:
-            rlist, _, _ = select.select([fifo], [], [], 1)
+            try:
+                rlist, _, _ = select.select([fifo], [], [], 1)
+            except select.error:
+                continue
             if rlist:
                 try:
                     data += fifo.readline()