diff --git a/src/codaro/api/publishedServerRouter.py b/src/codaro/api/publishedServerRouter.py
index 48a24bf5..de681c02 100644
--- a/src/codaro/api/publishedServerRouter.py
+++ b/src/codaro/api/publishedServerRouter.py
@@ -74,6 +74,7 @@ def createSession(request: CreateSessionRequest | None = None) -> CreateSessionR
 
     @router.delete("/api/kernel/{sessionId}")
     def destroySession(sessionId: str) -> dict[str, bool]:
+        requireSession(sessionId)
         return {"destroyed": runtime.sessionManager.destroySession(sessionId)}
 
     @router.post("/api/kernel/{sessionId}/execute")