diff --git src/bp-core/admin/bp-core-admin-tools.php src/bp-core/admin/bp-core-admin-tools.php
index 6926c28..b929f69 100644
--- src/bp-core/admin/bp-core-admin-tools.php
+++ src/bp-core/admin/bp-core-admin-tools.php
@@ -357,7 +357,7 @@ function bp_admin_tools_feedback( $message, $class = false ) {
 
 	$message = '<div id="message" class="' . esc_attr( $class ) . '">' . $message . '</div>';
 	$message = str_replace( "'", "\'", $message );
-	$lambda  = create_function( '', "echo '$message';" );
+	$lambda  = function() use ( $message ) { echo $message; };
 
 	add_action( bp_core_do_network_admin() ? 'network_admin_notices' : 'admin_notices', $lambda );