diff --git a/scripts/zmfilter.pl.z b/scripts/zmfilter.pl.z
index 60a9f121b..a08ab1e1e 100755
--- a/scripts/zmfilter.pl.z
+++ b/scripts/zmfilter.pl.z
@@ -199,7 +199,7 @@ my $last_action = 0;
 my $size = 28; # We only need the first 28 bytes really for the last event count
 my $key = hex(ZM_SHM_KEY)|$monitor;
 my $shmid = shmget( $key, $size, 0 );
-die( "Can't get shared memory id: $!" ) if ( !defined($shmid) );
+die( "Can't get shared memory id '$key': $!\n" ) if ( !defined($shmid) );
 
 while( 1 )
 {
diff --git a/scripts/zmx10.pl.z b/scripts/zmx10.pl.z
index 315193392..71438598b 100755
--- a/scripts/zmx10.pl.z
+++ b/scripts/zmx10.pl.z
@@ -451,7 +451,7 @@ sub loadTasks
 		$monitor->{ShmId} = shmget( $monitor->{ShmKey}, $size, 0 );
 		if ( !defined($monitor->{ShmId}) )
 		{
-			print( "Can't get shared memory id: $!\n" );
+			print( "Can't get shared memory id '$monitor->{ShmKey}': $!\n" );
 			next;
 		}