diff --git a/includes/core/classes/class-user.php b/includes/core/classes/class-user.php
index 75523ef27..45701817e 100644
--- a/includes/core/classes/class-user.php
+++ b/includes/core/classes/class-user.php
@@ -214,8 +214,8 @@ public function save_profile_fields( int $user_id ): void {
 		}
 
 		update_user_meta( $user_id, 'gatherpress_event_updates_opt_in', intval( filter_input( INPUT_POST, 'gatherpress_event_updates_opt_in' ) ) );
-		update_user_meta( $user_id, 'gatherpress_date_format', sanitize_text_field( filter_input( INPUT_POST, 'gatherpress_date_format' ) ) );
-		update_user_meta( $user_id, 'gatherpress_time_format', sanitize_text_field( filter_input( INPUT_POST, 'gatherpress_time_format' ) ) );
+		update_user_meta( $user_id, 'gatherpress_date_format', sanitize_text_field( filter_input( INPUT_POST, 'gatherpress_date_format', FILTER_SANITIZE_ADD_SLASHES ) ) );
+		update_user_meta( $user_id, 'gatherpress_time_format', sanitize_text_field( filter_input( INPUT_POST, 'gatherpress_time_format', FILTER_SANITIZE_ADD_SLASHES ) ) );
 		update_user_meta( $user_id, 'gatherpress_timezone', sanitize_text_field( filter_input( INPUT_POST, 'gatherpress_timezone' ) ) );
 	}
 }