diff --git src/bp-core/bp-core-template.php src/bp-core/bp-core-template.php
index 0961c0805..6a4efd461 100644
--- src/bp-core/bp-core-template.php
+++ src/bp-core/bp-core-template.php
@@ -2411,7 +2411,7 @@ function bp_is_user_friends_activity() {
 		return false;
 	}
 
-	$slug = bp_get_friends_slug();
+	$slug = function_exists( 'bp_get_friends_slug' ) ? bp_get_friends_slug() : '';
 
 	if ( empty( $slug ) ) {
 		$slug = 'friends';
@@ -2439,9 +2439,11 @@ function bp_is_user_groups_activity() {
 		return false;
 	}
 
-	$slug = ( bp_get_groups_slug() )
-		? bp_get_groups_slug()
-		: 'groups';
+	$slug = function_exists( 'bp_get_groups_slug' ) ? bp_get_groups_slug() : '';
+
+	if ( empty( $slug ) ) {
+		$slug = 'groups';
+	}
 
 	if ( bp_is_user_activity() && bp_is_current_action( $slug ) ) {
 		return true;