diff --git a/installer/data/mysql/db_revs/241200018.pl b/installer/data/mysql/db_revs/241200018.pl
index 088f9349d1..64cb35e89d 100755
--- a/installer/data/mysql/db_revs/241200018.pl
+++ b/installer/data/mysql/db_revs/241200018.pl
@@ -8,14 +8,26 @@ return {
         my ($args) = @_;
         my ( $dbh, $out ) = @$args{qw(dbh out)};
 
-        $dbh->do(q{ ALTER TABLE additional_field_values ADD COLUMN new_record_id VARCHAR(11) NOT NULL DEFAULT ''; });
+        my $sth = $dbh->prepare("SHOW COLUMNS FROM additional_field_values WHERE Field = 'record_id'");
+        $sth->execute();
+        my $column_info = $sth->fetchrow_hashref();
 
-        $dbh->do(q{ UPDATE additional_field_values SET new_record_id = CAST(record_id AS CHAR(11)); });
+        if ( $column_info && $column_info->{Type} eq 'int(11)' ) {
 
-        $dbh->do(q{ ALTER TABLE additional_field_values DROP COLUMN record_id; });
+            # Only run the migration if record_id is still an integer type
+            say_info( $out, "Converting record_id from int(11) to VARCHAR(11)...\n" );
 
-        $dbh->do(q{ ALTER TABLE additional_field_values RENAME COLUMN new_record_id TO record_id; });
+            $dbh->do(
+                q{ ALTER TABLE additional_field_values ADD COLUMN new_record_id VARCHAR(11) NOT NULL DEFAULT ''; });
+            $dbh->do(q{ UPDATE additional_field_values SET new_record_id = CAST(record_id AS CHAR(11)); });
+            $dbh->do(q{ ALTER TABLE additional_field_values DROP COLUMN record_id; });
+            $dbh->do(q{ ALTER TABLE additional_field_values RENAME COLUMN new_record_id TO record_id; });
 
-        say_success( $out, "Converted additional_field_values.record_id to VARCHAR" );
+            say_success( $out, "Converted record_id to VARCHAR" );
+        } else {
+
+            # Either the column doesn't exist or it's already been converted
+            say_info( $out, "No conversion needed for record_id column." );
+        }
     },
 };