diff --git a/dictation_client/src/features/dictation/operations.ts b/dictation_client/src/features/dictation/operations.ts
index a1ec6aa..c4bddbf 100644
--- a/dictation_client/src/features/dictation/operations.ts
+++ b/dictation_client/src/features/dictation/operations.ts
@@ -18,7 +18,7 @@ export const listTasksAsync = createAsyncThunk<
     // パラメータ
     limit: number;
     offset: number;
-    filter: string;
+    filter?: string;
     direction: DirectionType;
     paramName: SortableColumnType;
   },
diff --git a/dictation_client/src/pages/DictationPage/index.tsx b/dictation_client/src/pages/DictationPage/index.tsx
index f87ffa7..04b4f0d 100644
--- a/dictation_client/src/pages/DictationPage/index.tsx
+++ b/dictation_client/src/pages/DictationPage/index.tsx
@@ -222,7 +222,7 @@ const DictationPage: React.FC = (): JSX.Element => {
     hasPending: boolean,
     hasFinished: boolean,
     hasBackup: boolean
-  ) => {
+  ): string | undefined => {
     const filterStatus = [];
     if (hasUploaded) {
       filterStatus.push(STATUS.UPLOADED);
@@ -240,6 +240,9 @@ const DictationPage: React.FC = (): JSX.Element => {
       filterStatus.push(STATUS.BACKUP);
     }
 
+    if (filterStatus.length === 0) {
+      return undefined;
+    }
     return filterStatus.join(",");
   };