diff --git a/fhem/CHANGED b/fhem/CHANGED
index 49bd8c8ef..c3c7c4195 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+  - bugfix: FB_CALLMONITOR: fix phonebook file read when using configDb (Forum #30244)
   - feature: 70_XBMC: added commands: openmovieid, openepisodeid, addon, jsonraw (thanks to siggi85)
   - fix: 70_XBMC: made fork attribute to close file handles correctly
   - feature: 70_XBMC: added mechanism to detect disconnects (TCP)
diff --git a/fhem/FHEM/72_FB_CALLMONITOR.pm b/fhem/FHEM/72_FB_CALLMONITOR.pm
index 76bcb47f6..66d0cd48e 100755
--- a/fhem/FHEM/72_FB_CALLMONITOR.pm
+++ b/fhem/FHEM/72_FB_CALLMONITOR.pm
@@ -670,7 +670,7 @@ sub FB_CALLMONITOR_readPhonebook($;$$)
         ($err, @lines) = FileRead($phonebook_file);
        
         
-        if(defined($err))
+        if(defined($err) && $err)
         {
             Log3 $name, 2, "FB_CALLMONITOR ($name) - could not read FritzBox phonebook file - $err";
             return "Could not read FritzBox phonebook file - $err";