diff --git a/fhem/CHANGED b/fhem/CHANGED
index cafefed66..04af7420e 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,7 @@
 # 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:  72_FB_CALLMONITOR: fix wrong call-by-call number removing for
+                               german call-by-call numbers
  - change:  93_DbRep: commandRef revised
  - new Version:  98_Siro.pm: V1.0
                  (Forum: https://forum.fhem.de/index.php/topic,100605.0.html)
diff --git a/fhem/FHEM/72_FB_CALLMONITOR.pm b/fhem/FHEM/72_FB_CALLMONITOR.pm
index a90624301..7189afaa5 100755
--- a/fhem/FHEM/72_FB_CALLMONITOR.pm
+++ b/fhem/FHEM/72_FB_CALLMONITOR.pm
@@ -445,7 +445,7 @@ FB_CALLMONITOR_Read($)
             if($array[1] eq "CALL")
             {
                 # Remove Call-By-Call number (Germany)
-                $external_number =~ s/^(010\d\d|0100\d\d)//g if($country_code eq "0049");
+                $external_number =~ s/^(010[1-9]\d|0100[1-9]\d)//g if($country_code eq "0049");
                 
                 # Remove Call-By-Call number (Austria)
                 $external_number =~ s/^10\d\d//g if($country_code eq "0043");