diff --git a/fhem/FHEM/72_FB_CALLMONITOR.pm b/fhem/FHEM/72_FB_CALLMONITOR.pm
index 927662e18..73d290df6 100755
--- a/fhem/FHEM/72_FB_CALLMONITOR.pm
+++ b/fhem/FHEM/72_FB_CALLMONITOR.pm
@@ -237,7 +237,11 @@ FB_CALLMONITOR_Read($)
     if($array[1] eq "CALL" or $array[1] eq "RING")
     {
         delete($hash->{helper}{TEMP}{$array[2]}) if(exists($hash->{helper}{TEMP}{$array[2]}));
-
+        
+        if(AttrVal($name, "unique-call-ids", "0") eq "1")
+        {
+           $hash->{helper}{TEMP}{$array[2]}{call_id} = Digest::MD5::md5_hex($data);
+        }
     }
 
     if($array[1] eq "CALL")
@@ -280,22 +284,25 @@ FB_CALLMONITOR_Read($)
     
     foreach my $key (keys %{$hash->{helper}{TEMP}{$array[2]}})
     {
-        readingsBulkUpdate($hash, $key, $hash->{helper}{TEMP}{$array[2]}{$key});
+        readingsBulkUpdate($hash, $key, $hash->{helper}{TEMP}{$array[2]}{$key}) unless($key eq "call_id");
     }   
     
+    if(AttrVal($name, "unique-call-ids", "0") eq "1" and exists($hash->{helper}{TEMP}{$array[2]}{call_id}))
+    {
+        readingsBulkUpdate($hash, "call_id", $hash->{helper}{TEMP}{$array[2]}{call_id});
+    }
+    else
+    {
+        readingsBulkUpdate($hash, "call_id", $array[2]);
+    }
+    
     if($array[1] eq "DISCONNECT")
     {
         delete($hash->{helper}{TEMP}{$array[2]}) if(exists($hash->{helper}{TEMP}{$array[2]}));
     }
 
-    if(AttrVal($name, "unique-call-ids", "0") eq "1")
-    {
-        readingsBulkUpdate($hash, "call_id" ,Digest::MD5::md5_hex($data));
-    }
-    else
-    {
-       readingsBulkUpdate($hash, "call_id", $array[2]);
-    }
+
+   
     
     readingsEndUpdate($hash, 1);
 }