diff --git a/server/src/router/matches.ts b/server/src/router/matches.ts
index 0017ff27..859722f9 100644
--- a/server/src/router/matches.ts
+++ b/server/src/router/matches.ts
@@ -28,7 +28,7 @@ const router = new Hono()
 
       await deleteMatch(requesterId, opponentId as UserID);
       c.status(204);
-      c.text("");
+      return c.text("");
     },
   );
 
diff --git a/server/src/router/picture.ts b/server/src/router/picture.ts
index 1332bdd7..18fc8361 100644
--- a/server/src/router/picture.ts
+++ b/server/src/router/picture.ts
@@ -54,9 +54,7 @@ const router = new Hono()
 
       return storage.getPic(hash, String(key)).then((buf) => {
         if (buf) {
-          c.body(buf);
-        } else {
-          error("not found", 404);
+          return c.body(buf);
         }
       });
     },
diff --git a/server/src/router/requests.ts b/server/src/router/requests.ts
index a7eb63db..34e8fd6b 100644
--- a/server/src/router/requests.ts
+++ b/server/src/router/requests.ts
@@ -40,7 +40,7 @@ const router = new Hono()
 
       await approveRequest(senderId as UserID, receiverId);
       c.status(201);
-      c.json({});
+      return c.json({});
     },
   )
 
@@ -51,6 +51,7 @@ const router = new Hono()
       const opponentId = c.req.valid("param").opponentId;
       const requesterId = await getUserId(c);
       await cancelRequest(requesterId, opponentId);
+      return c.json({});
     },
   )
 
@@ -64,7 +65,7 @@ const router = new Hono()
 
       await rejectRequest(opponentId as UserID, requesterId); //TODO 名前を良いのに変える
       c.status(204);
-      c.json({});
+      return c.json({});
     },
   );