diff --git a/spec/integ/sliding-sync.spec.ts b/spec/integ/sliding-sync.spec.ts
index 531569b07..0b1e9fedd 100644
--- a/spec/integ/sliding-sync.spec.ts
+++ b/spec/integ/sliding-sync.spec.ts
@@ -1129,13 +1129,13 @@ describe("SlidingSync", () => {
         const customSubName1 = "sub1";
         const customSub1 = {
             timeline_limit: 2,
-            required_state: [["*","*"]],
+            required_state: [["*", "*"]],
         };
 
         const customSubName2 = "sub2";
         const customSub2 = {
             timeline_limit: 3,
-            required_state: [["*","*"]],
+            required_state: [["*", "*"]],
         };
 
         it("should be possible to use custom subscriptions on startup", async () => {
@@ -1260,7 +1260,6 @@ describe("SlidingSync", () => {
             await httpBackend!.flushAllExpected();
             slidingSync.stop();
         });
-
     });
 
     describe("extensions", () => {
diff --git a/src/sliding-sync.ts b/src/sliding-sync.ts
index d4ff89614..d5e15d96a 100644
--- a/src/sliding-sync.ts
+++ b/src/sliding-sync.ts
@@ -387,7 +387,7 @@ export class SlidingSync extends TypedEventEmitter<SlidingSyncEvent, SlidingSync
      * useCustomSubscription.
      * @param sub The subscription information.
      */
-    public addCustomSubscription(name: string, sub :MSC3575RoomSubscription) {
+    public addCustomSubscription(name: string, sub: MSC3575RoomSubscription) {
         this.customSubscriptions[name] = sub;
     }