diff --git a/src/components/views/rooms/EventTile.tsx b/src/components/views/rooms/EventTile.tsx
index 27afc4debb..5ab3efa96f 100644
--- a/src/components/views/rooms/EventTile.tsx
+++ b/src/components/views/rooms/EventTile.tsx
@@ -729,11 +729,6 @@ export class UnwrappedEventTile extends React.Component<EventTileProps, IState>
         if (this.state.shieldColour !== EventShieldColour.NONE) {
             let shieldReasonMessage: string;
             switch (this.state.shieldReason) {
-                case null:
-                case EventShieldReason.UNKNOWN:
-                    shieldReasonMessage = _t("error|unknown");
-                    break;
-
                 case EventShieldReason.UNVERIFIED_IDENTITY:
                     shieldReasonMessage = _t("encryption|event_shield_reason_unverified_identity");
                     break;
@@ -761,6 +756,10 @@ export class UnwrappedEventTile extends React.Component<EventTileProps, IState>
                 case EventShieldReason.VERIFICATION_VIOLATION:
                     shieldReasonMessage = _t("timeline|decryption_failure|sender_identity_previously_verified");
                     break;
+
+                default:
+                    shieldReasonMessage = _t("error|unknown");
+                    break;
             }
 
             if (this.state.shieldColour === EventShieldColour.GREY) {