diff --git a/run.sh b/run.sh
index 1645d9e..b09dc9c 100644
--- a/run.sh
+++ b/run.sh
@@ -2,9 +2,13 @@
 
 function run(){
   nohup yarn start &
-  sleep 5s
-  pid=`findPortPid $webPort`
-  echo "pid is $pid"
+
+  pid=-1
+  while(( pid==-1 ))
+  do
+    pid=`findPortPid $webPort`
+    echo "pid is $pid"
+  done
   touch $pid.log && chmod +x $pid.log
 }