diff --git a/run_client b/run_client
index ebf0b96..2424705 100755
--- a/run_client
+++ b/run_client
@@ -1,3 +1,4 @@
 #!/bin/sh
 ./build
+killall np-cli
 ./bin/np-cli -conf test/client.yaml
\ No newline at end of file
diff --git a/run_server b/run_server
index 17b58ad..74fc717 100755
--- a/run_server
+++ b/run_server
@@ -1,3 +1,4 @@
 #!/bin/sh
 ./build
+killall np-svr
 ./bin/np-svr -conf test/server.yaml
\ No newline at end of file