diff --git a/Netstat.pm b/Netstat.pm
index 6517249..5ff2d01 100644
--- a/Netstat.pm
+++ b/Netstat.pm
@@ -268,12 +268,12 @@ sub sweep {
 sub generate_diff_netstat {
     my ($test) = @_;
 
-    my $diff = "$test.stats-diff-netstat.log";
+    my $diff = "$test.stats-netstat-diff.txt";
     open(my $fh, '>', $diff)
 	or die "Open '$diff' for writing failed: $!";
     foreach my $opt (qw(m s)) {
-	my $before = "$test.stats-before-netstat_-$opt.log";
-	my $after = "$test.stats-after-netstat_-$opt.log";
+	my $before = "$test.stats-netstat_-$opt-before.txt";
+	my $after = "$test.stats-netstat_-$opt-after.txt";
 	-r $before && -r $after
 	    or next;
 	my $parser;
diff --git a/netlink-html.pl b/netlink-html.pl
index 8b6073b..edeee05 100755
--- a/netlink-html.pl
+++ b/netlink-html.pl
@@ -644,7 +644,7 @@ sub parse_result_files {
 	    $tv->{message} = $message;
 	    my $logfile = "$file->{dir}/logs/$test.log";
 	    $tv->{logfile} = $logfile if -f $logfile;
-	    my $stats = "$file->{dir}/logs/$test.stats-diff-netstat.log";
+	    my $stats = "$file->{dir}/logs/$test.stats-netstat-diff.txt";
 	    $tv->{stats} = $stats if -f $stats;
 	    $V{$test}{$hk} = [ @values ];
 	    undef @values;
diff --git a/netlink.pl b/netlink.pl
index 1063a1c..32173f7 100755
--- a/netlink.pl
+++ b/netlink.pl
@@ -235,7 +235,7 @@ sub good {
     generate_diff_netstat($test);
 
     my $pass = "PASS";
-    my $netstat = "$test.stats-diff-netstat.log";
+    my $netstat = "$test.stats-netstat-diff.txt";
 
     open(my $fh, '<', $netstat) or die("Could not open '$netstat'");
     while(<$fh>) {
@@ -1328,7 +1328,7 @@ sub statistics {
     my ($test, $when) = @_;
     foreach my $s (@stats) {
 	my @statcmd = @{$s->{statcmd}};
-	my $name = "$test.stats-$when-". join("_", @statcmd). ".log";
+	my $name = "$test.stats-". join("_", @statcmd). "-$when.txt";
 	open(my $fh, '>', $name)
 	    or die "Open '$name' for writing failed: $!";
 	defined(my $pid = fork())