diff --git a/mysqltuner.pl b/mysqltuner.pl
index 3ee344c..fab7345 100755
--- a/mysqltuner.pl
+++ b/mysqltuner.pl
@@ -1505,8 +1505,13 @@ sub security_recommendations {
     }
 
     # Looking for Empty Password
+    if ( mysql_version_ge( 5, 5 ) ) {
     @mysqlstatlist = select_array
 "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE ($PASS_COLUMN_NAME = '' OR $PASS_COLUMN_NAME IS NULL) AND plugin NOT IN ('unix_socket', 'win_socket')";
+    } else {
+    @mysqlstatlist = select_array
+"SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE ($PASS_COLUMN_NAME = '' OR $PASS_COLUMN_NAME IS NULL)";
+    }
     if (@mysqlstatlist) {
         foreach my $line ( sort @mysqlstatlist ) {
             chomp($line);