Index: bp-members/bp-members-loader.php
===================================================================
--- bp-members/bp-members-loader.php	(revision 10285)
+++ bp-members/bp-members-loader.php	(working copy)
@@ -103,7 +103,7 @@
 			'search_string'   => __( 'Search Members...', 'buddypress' ),
 			'global_tables'   => array(
 				'table_name_last_activity' => bp_core_get_table_prefix() . 'bp_activity',
-				'table_name_signups'       => bp_core_get_table_prefix() . 'signups',
+				'table_name_signups'       => apply_filters( 'bp_signups_table_prefix', bp_core_get_table_prefix() ) . 'signups',
 			)
 		);