diff --git a/common/app/components/VideoPlayer.tsx b/common/app/components/VideoPlayer.tsx
index 91cb2e4a..1888c4e9 100755
--- a/common/app/components/VideoPlayer.tsx
+++ b/common/app/components/VideoPlayer.tsx
@@ -819,7 +819,7 @@ export default function VideoPlayer({
             (event, track) => {
                 event.preventDefault();
                 const originalValue = textSubtitleSettingsForTrack(subtitleSettings, track).subtitleBlur!;
-                const change = changeForTextSubtitleSetting({ subtitleBlur: !originalValue }, track);
+                const change = changeForTextSubtitleSetting({ subtitleBlur: !originalValue }, subtitleSettings, track);
                 setSubtitleSettings({ ...subtitleSettings, ...change });
             },
             () => false
diff --git a/common/app/services/app-key-binder.ts b/common/app/services/app-key-binder.ts
index 569443d5..a1125a4e 100644
--- a/common/app/services/app-key-binder.ts
+++ b/common/app/services/app-key-binder.ts
@@ -232,7 +232,7 @@ export default class AppKeyBinder implements KeyBinder {
     }
 
     bindToggleBlurTrack(
-        onToggleBlurTrack: (event: KeyboardEvent, extra: any) => void,
+        onToggleBlurTrack: (event: KeyboardEvent, track: number) => void,
         disabledGetter: () => boolean,
         useCapture?: boolean | undefined
     ): () => void {
diff --git a/common/key-binder/key-binder.ts b/common/key-binder/key-binder.ts
index 5f18940c..e06ff56c 100644
--- a/common/key-binder/key-binder.ts
+++ b/common/key-binder/key-binder.ts
@@ -111,7 +111,7 @@ export interface KeyBinder {
         capture?: boolean
     ): () => void;
     bindToggleBlurTrack(
-        onToggleBlurTrack: (event: KeyboardEvent, extra: any) => void,
+        onToggleBlurTrack: (event: KeyboardEvent, track: number) => void,
         disabledGetter: () => boolean,
         capture?: boolean
     ): () => void;
@@ -655,7 +655,7 @@ export class DefaultKeyBinder implements KeyBinder {
     }
 
     bindToggleBlurTrack(
-        onToggleBlurTrack: (event: KeyboardEvent, extra: any) => void,
+        onToggleBlurTrack: (event: KeyboardEvent, track: number) => void,
         disabledGetter: () => boolean,
         capture = false
     ) {