diff --git a/lib/TableChecksum.pm b/lib/TableChecksum.pm
index 714e7de0..2b7206c0 100644
--- a/lib/TableChecksum.pm
+++ b/lib/TableChecksum.pm
@@ -111,23 +111,15 @@ sub best_algorithm {
    die "Invalid checksum algorithm $alg"
       if $alg && !$ALGOS{$alg};
 
-   my $version = VersionParser->new($dbh);
-
    # CHECKSUM is eliminated by lots of things...
    if (
       $args{where} || $args{chunk}        # CHECKSUM does whole table
-      || $args{replicate}                 # CHECKSUM can't do INSERT.. SELECT
-      || $version < '4.1.1') # CHECKSUM doesn't exist
+      || $args{replicate})                # CHECKSUM can't do INSERT.. SELECT
    {
       PTDEBUG && _d('Cannot use CHECKSUM algorithm');
       @choices = grep { $_ ne 'CHECKSUM' } @choices;
    }
 
-   # BIT_XOR isn't available till 4.1.1 either
-   if ( $version < '4.1.1' ) {
-      PTDEBUG && _d('Cannot use BIT_XOR algorithm because MySQL < 4.1.1');
-      @choices = grep { $_ ne 'BIT_XOR' } @choices;
-   }
 
    # Choose the best (fastest) among the remaining choices.
    if ( $alg && grep { $_ eq $alg } @choices ) {
diff --git a/lib/TableParser.pm b/lib/TableParser.pm
index 1e711d48..9d90de3b 100644
--- a/lib/TableParser.pm
+++ b/lib/TableParser.pm
@@ -26,8 +26,6 @@
 # $tbl is the return value from the sub below, parse().
 #
 # And some subs have an optional $opts param which is a hashref of options.
-# $opts->{mysql_version} is typically used, which is the return value from
-# VersionParser->new()
 package TableParser;
 
 use strict;
@@ -420,12 +418,6 @@ sub get_keys {
       my ( $type, $cols ) = $key =~ m/(?:USING (\w+))? \((.+)\)/;
       my ( $special ) = $key =~ m/(FULLTEXT|SPATIAL)/;
       $type = $type || $special || 'BTREE';
-      if ( $opts->{mysql_version} && $opts->{mysql_version} lt '4.1'
-         && $engine =~ m/HEAP|MEMORY/i )
-      {
-         $type = 'HASH'; # MySQL pre-4.1 supports only HASH indexes on HEAP
-      }
-
       my ($name) = $key =~ m/(PRIMARY|`[^`]*`)/;
       my $unique = $key =~ m/PRIMARY|UNIQUE/ ? 1 : 0;
       my @cols;
diff --git a/lib/TableSyncer.pm b/lib/TableSyncer.pm
index 24f48083..30fa3de4 100644
--- a/lib/TableSyncer.pm
+++ b/lib/TableSyncer.pm
@@ -143,16 +143,13 @@ sub sync_table {
    # Make an index hint for either the explicitly given chunk_index
    # or the chunk_index chosen by the plugin if index_hint is true.
    my $index_hint;
-   my $hint = ((VersionParser->new($src->{dbh}) >= '4.0.9'
-               && VersionParser->new($dst->{dbh}) >= '4.0.9') ? 'FORCE' : 'USE')
-            . ' INDEX';
    if ( $args{chunk_index} ) {
       PTDEBUG && _d('Using given chunk index for index hint');
-      $index_hint = "$hint (" . $q->quote($args{chunk_index}) . ")";
+      $index_hint = "FORCE INDEX (" . $q->quote($args{chunk_index}) . ")";
    }
    elsif ( $plugin_args{chunk_index} && $args{index_hint} ) {
       PTDEBUG && _d('Using chunk index chosen by plugin for index hint');
-      $index_hint = "$hint (" . $q->quote($plugin_args{chunk_index}) . ")";
+      $index_hint = "FORCE INDEX (" . $q->quote($plugin_args{chunk_index}) . ")";
    }
    PTDEBUG && _d('Index hint:', $index_hint);
 
diff --git a/t/lib/TableChecksum.t b/t/lib/TableChecksum.t
index 33f08d53..6d8d09ee 100644
--- a/t/lib/TableChecksum.t
+++ b/t/lib/TableChecksum.t
@@ -11,7 +11,6 @@ use warnings FATAL => 'all';
 use English qw(-no_match_vars);
 use Test::More;
 
-use VersionParser;
 use TableChecksum;
 use TableParser;
 use Quoter;
@@ -118,8 +117,8 @@ is (
       algorithm => 'CHECKSUM',
       dbh       => '4.0.0',
    ),
-   'ACCUM',
-   'CHECKSUM and BIT_XOR eliminated by version',
+   'CHECKSUM',
+   'Ignore version, always use CHECKSUM',
 );
 
 is (
@@ -136,8 +135,8 @@ is (
       algorithm => 'BIT_XOR',
       dbh       => '4.0.0',
    ),
-   'ACCUM',
-   'BIT_XOR eliminated by version',
+   'BIT_XOR',
+   'Ignore version, always use BIT_XOR',
 );
 
 is (