diff --git a/mod/hotpot/db/update_to_v2.php b/mod/hotpot/db/update_to_v2.php
index <HASH>..<HASH> 100644
--- a/mod/hotpot/db/update_to_v2.php
+++ b/mod/hotpot/db/update_to_v2.php
@@ -7,7 +7,7 @@ function hotpot_update_to_v2_1_16() {
 	$length = 20;

 	$field = 'name';

 	$table = 'hotpot_questions';

-	$index = '{$table}_{$name}_idx';

+	$index = "{$table}_{$name}_idx";

 

 	// remove the index

 	hotpot_db_delete_index("{$CFG->prefix}$table", $index);
change single quotes to double quotes. Probable fix for bug <I>