diff --git a/Makefile b/Makefile
index 26f233de2..8fa43abd2 100644
--- a/Makefile
+++ b/Makefile
@@ -166,7 +166,7 @@ stop:
 	@-pkill -f "next dev" 2>/dev/null || true
 	@-nginx -c $(PWD)/docker/nginx/nginx.local.conf -p $(PWD) -s quit 2>/dev/null || true
 	@sleep 1
-	@-pkill -9 nginx 2>/dev/null || true
+	@-pkill -9 -f nginx.local.conf 2>/dev/null || true
 	@echo "Cleaning up sandbox containers..."
 	@-./scripts/cleanup-containers.sh deer-flow-sandbox 2>/dev/null || true
 	@echo "✓ All services stopped"
diff --git a/scripts/start.sh b/scripts/start.sh
index 2dbaf9a53..25b4b1217 100755
--- a/scripts/start.sh
+++ b/scripts/start.sh
@@ -17,7 +17,7 @@ pkill -f "uvicorn src.gateway.app:app" 2>/dev/null || true
 pkill -f "next dev" 2>/dev/null || true
 nginx -c "$REPO_ROOT/docker/nginx/nginx.local.conf" -p "$REPO_ROOT" -s quit 2>/dev/null || true
 sleep 1
-pkill -9 nginx 2>/dev/null || true
+pkill -9 -f nginx.local.conf 2>/dev/null || true
 ./scripts/cleanup-containers.sh deer-flow-sandbox 2>/dev/null || true
 sleep 1
 
@@ -62,7 +62,7 @@ cleanup() {
     pkill -f "next dev" 2>/dev/null || true
     nginx -c "$REPO_ROOT/docker/nginx/nginx.local.conf" -p "$REPO_ROOT" -s quit 2>/dev/null || true
     sleep 1
-    pkill -9 nginx 2>/dev/null || true
+    pkill -9 -f nginx.local.conf 2>/dev/null || true
     echo "Cleaning up sandbox containers..."
     ./scripts/cleanup-containers.sh deer-flow-sandbox 2>/dev/null || true
     echo "✓ All services stopped"