diff --git a/fhem/FHEM/93_FHEM2FHEM.pm b/fhem/FHEM/93_FHEM2FHEM.pm
index c5052ea04..a8be37502 100755
--- a/fhem/FHEM/93_FHEM2FHEM.pm
+++ b/fhem/FHEM/93_FHEM2FHEM.pm
@@ -150,6 +150,8 @@ FHEM2FHEM_Read($)
         $defs{$name}{NAME}  = $name;
         $defs{$name}{TYPE}  = $type;
         $defs{$name}{STATE} = $msg;
+        $defs{$name}{FAKEDEVICE} = 1; # Avoid set/attr/delete/etc in notify
+        $defs{$name}{TEMPORARY} = 1;  # Do not save it
         DoTrigger($name, $msg);
         delete($defs{$name});
 
diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index ea73f5ff6..04e6b534a 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -788,7 +788,12 @@ devspec2array($)
   my ($name) = @_;
 
   return "" if(!defined($name));
-  return $name if(defined($defs{$name}));
+  if(defined($defs{$name})) {
+    # FHEM2FHEM LOG mode fake device, avoid local set/attr/etc operations on it
+    return "FHEM2FHEM_FAKE_$name" if($defs{$name}{FAKEDEVICE});
+    return $name;
+  }
+  # FAKE is set by FHEM2FHEM LOG
 
   my ($isattr, @ret);