diff --git a/fhem/CHANGED b/fhem/CHANGED
index 7cd91a555..61d44cbb5 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.
+  - update:  21_HEOS: fix Use of uninitialized value {repeat}
+                      in substitution (s///)
   - change:  88_xs1Bridge: Typ timerswitch added
   - change:  88_xs1Dev: Typ timerswitch added
   - feature: 72_FB_CALLMONITOR: new reverse search provider 11880.com (german)
diff --git a/fhem/FHEM/21_HEOSGroup.pm b/fhem/FHEM/21_HEOSGroup.pm
index f134e5dbc..b967bc5ec 100644
--- a/fhem/FHEM/21_HEOSGroup.pm
+++ b/fhem/FHEM/21_HEOSGroup.pm
@@ -2,7 +2,7 @@
 #
 # Developed with Kate
 #
-#  (c) 2017 Copyright: Marko Oldenburg (leongaultier at gmail dot com)
+#  (c) 2017-2018 Copyright: Marko Oldenburg (leongaultier at gmail dot com)
 #  All rights reserved
 #
 #   Special thanks goes to comitters:
diff --git a/fhem/FHEM/21_HEOSMaster.pm b/fhem/FHEM/21_HEOSMaster.pm
index 92528fb86..7e6aa2f24 100644
--- a/fhem/FHEM/21_HEOSMaster.pm
+++ b/fhem/FHEM/21_HEOSMaster.pm
@@ -2,7 +2,7 @@
 #
 # Developed with Kate
 #
-#  (c) 2017 Copyright: Marko Oldenburg (leongaultier at gmail dot com)
+#  (c) 2017-2018 Copyright: Marko Oldenburg (leongaultier at gmail dot com)
 #  All rights reserved
 #
 #   Special thanks goes to comitters:
diff --git a/fhem/FHEM/21_HEOSPlayer.pm b/fhem/FHEM/21_HEOSPlayer.pm
index e2a37f62c..8ef9ea9f8 100644
--- a/fhem/FHEM/21_HEOSPlayer.pm
+++ b/fhem/FHEM/21_HEOSPlayer.pm
@@ -2,7 +2,7 @@
 #
 # Developed with Kate
 #
-#  (c) 2017 Copyright: Marko Oldenburg (leongaultier at gmail dot com)
+#  (c) 2017-2018 Copyright: Marko Oldenburg (leongaultier at gmail dot com)
 #  All rights reserved
 #
 #   Special thanks goes to comitters:
@@ -39,7 +39,7 @@ use Encode qw(encode_utf8);
 use URI::Escape;
 #use Data::Dumper;
 
-my $version = "1.0.3";
+my $version = "1.0.4";
 
 
 
@@ -938,7 +938,7 @@ sub HEOSPlayer_PreProcessingReadings($$) {
     
         $buffer{'shuffle'}  = $message{shuffle};
         $buffer{'repeat'}   = $message{repeat};
-        $buffer{'repeat'}   =~ s/.*\_(.*)/$1/g;
+        $buffer{'repeat'}   =~ s/.*\_(.*)/$1/g if( defined($buffer{'repeat'}) );
         
     } elsif ( $decode_json->{heos}{command} =~ /get_mute/ ) {