diff --git a/bin/pt-archiver b/bin/pt-archiver
index 4e3d48b7..093b11af 100755
--- a/bin/pt-archiver
+++ b/bin/pt-archiver
@@ -7285,7 +7285,7 @@ sub main {
          PTDEBUG && _d('Got another row in this chunk');
       }
 
-      # Check slave lag and wait if slave is too far behind.
+      # Check replica lag and wait if slave is too far behind.
       # Do this check every 100 rows
       if (@lag_dbh && $lag_count++ % 100 == 0 ) {
          foreach my $lag_server (@lag_dbh) {
@@ -7294,9 +7294,9 @@ sub main {
             if ( $lag_dbh ) {
                my $lag = $ms->get_replica_lag($lag_dbh);
                while ( !defined $lag || $lag > $o->get('max-lag') ) {
-                  PTDEBUG && _d("Sleeping: slave lag for server '$id' is", $lag);
+                  PTDEBUG && _d("Sleeping: replica lag for server '$id' is", $lag);
                   if ($o->got('progress')) {
-                     _d("Sleeping: slave lag for server '$id' is", $lag);
+                     _d("Sleeping: replica lag for server '$id' is", $lag);
                   }
                   sleep($o->get('check-interval'));
                   $lag = $ms->get_replica_lag($lag_dbh);
diff --git a/bin/pt-online-schema-change b/bin/pt-online-schema-change
index c9a78474..5e05bb17 100755
--- a/bin/pt-online-schema-change
+++ b/bin/pt-online-schema-change
@@ -9272,7 +9272,7 @@ sub main {
       }
 
       if ( my $dsn = $o->get('check-replica-lag') ) {
-         PTDEBUG && _d('Will use --check-replica-lag to check for slave lag');
+         PTDEBUG && _d('Will use --check-replica-lag to check for replica lag');
          my $cxn = $make_cxn->(
             dsn_string => $o->get('check-replica-lag'),
             #prev_dsn   => $cxn->dsn(),