diff --git a/fhem/CHANGED b/fhem/CHANGED
index ee36387b5..d351e07ad 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:  88_HMCCU: Keep eventMap when resetting attributes
  - bugfix:  88_HMCCU: Fixed attribute room bug
  - new:     58_RPI_1Wire: Raspberry Pi 1Wire interface replacing 58_GPIO4
  - change:  73_AutoShuttersControl: change names of CommandTemplate variables,
diff --git a/fhem/FHEM/88_HMCCU.pm b/fhem/FHEM/88_HMCCU.pm
index de14e4568..c5e6e9b3f 100755
--- a/fhem/FHEM/88_HMCCU.pm
+++ b/fhem/FHEM/88_HMCCU.pm
@@ -57,7 +57,7 @@ my %HMCCU_CUST_CHN_DEFAULTS;
 my %HMCCU_CUST_DEV_DEFAULTS;
 
 # HMCCU version
-my $HMCCU_VERSION = '5.0 213001927';
+my $HMCCU_VERSION = '5.0 213011850';
 
 # Timeout for CCU requests (seconds)
 my $HMCCU_TIMEOUT_REQUEST = 4;
@@ -6642,11 +6642,9 @@ sub HMCCU_SetDefaultAttributes ($;$)
 	$parRef //= { mode => 'update', role => undef, roleChn => undef };
 	my $role;
 
-#	HMCCU_Log ($clHash, 2, HMCCU_RefToString($parRef));
-
 	if ($parRef->{mode} eq 'reset') {
 		# List of attributes to be removed
-		my @removeAttr = ('ccureadingname', 'ccuscaleval', 'eventMap', 'cmdIcon',
+		my @removeAttr = ('ccureadingname', 'ccuscaleval', 'cmdIcon',
 			'substitute', 'webCmd', 'widgetOverride'
 		);
 
diff --git a/fhem/FHEM/88_HMCCUCHN.pm b/fhem/FHEM/88_HMCCUCHN.pm
index 5219e4788..d067130fd 100644
--- a/fhem/FHEM/88_HMCCUCHN.pm
+++ b/fhem/FHEM/88_HMCCUCHN.pm
@@ -30,7 +30,7 @@ sub HMCCUCHN_Set ($@);
 sub HMCCUCHN_Get ($@);
 sub HMCCUCHN_Attr ($@);
 
-my $HMCCUCHN_VERSION = '5.0 213001927';
+my $HMCCUCHN_VERSION = '5.0 213011850';
 
 ######################################################################
 # Initialize module
@@ -360,12 +360,14 @@ sub HMCCUCHN_Set ($@)
 	elsif ($lcopt eq 'defaults') {
 		my $mode = shift @$a // 'update';
 		my $rc = 0;
+		my $retMsg = 'OK';
 		if ($mode ne 'old') {
 			$rc = HMCCU_SetDefaultAttributes ($hash, { mode => $mode, role => undef, roleChn => undef });
+			$retMsg = 'Please remove HMCCU 4.3 entries from attribute eventMap' if ($rc && $mode eq 'reset' && exists($attr{$name}{eventMap}));
 		}
 		$rc = HMCCU_SetDefaults ($hash) if (!$rc);
 		HMCCU_RefreshReadings ($hash) if ($rc);
-		return HMCCU_SetError ($hash, $rc == 0 ? "No default attributes found" : "OK");
+		return HMCCU_SetError ($hash, $rc == 0 ? 'No default attributes found' : $retMsg);
 	}
 	else {
 		return "Unknown argument $opt choose one of $syntax";
diff --git a/fhem/FHEM/88_HMCCUDEV.pm b/fhem/FHEM/88_HMCCUDEV.pm
index ae2bebb83..f5649777b 100644
--- a/fhem/FHEM/88_HMCCUDEV.pm
+++ b/fhem/FHEM/88_HMCCUDEV.pm
@@ -31,7 +31,7 @@ sub HMCCUDEV_Set ($@);
 sub HMCCUDEV_Get ($@);
 sub HMCCUDEV_Attr ($@);
 
-my $HMCCUDEV_VERSION = '5.0 213001927';
+my $HMCCUDEV_VERSION = '5.0 213011850';
 
 ######################################################################
 # Initialize module
@@ -448,12 +448,14 @@ sub HMCCUDEV_Set ($@)
 	elsif ($lcopt eq 'defaults') {
 		my $mode = shift @$a // 'update';
 		my $rc = 0;
+		my $retMsg = 'OK';
 		if ($mode ne 'old') {
 			$rc = HMCCU_SetDefaultAttributes ($hash, { mode => $mode, role => undef, roleChn => undef });
+			$retMsg = 'Please remove HMCCU 4.3 entries from attribute eventMap' if ($rc && $mode eq 'reset' && exists($attr{$name}{eventMap}));
 		}
 		$rc = HMCCU_SetDefaults ($hash) if (!$rc);
 		HMCCU_RefreshReadings ($hash) if ($rc);
-		return HMCCU_SetError ($hash, $rc == 0 ? 'No default attributes found' : 'OK');
+		return HMCCU_SetError ($hash, $rc == 0 ? 'No default attributes found' : $retMsg);
 	}
 	else {
 		return "Unknown argument $opt choose one of $syntax";