diff --git a/run.sh b/run.sh
index 5c183a2..5f78feb 100644
--- a/run.sh
+++ b/run.sh
@@ -15,11 +15,11 @@ then
   kill -9 $pid
   if [ $? -eq 0 ]
   then
-    echo 'kill $pid success'
+    echo "kill $pid success"
     rm -f *.log
     run
   else
-    echo 'kill $pid error'
+    echo "kill $pid error"
   fi
 else
   run