diff --git a/lib/util/devutil.js b/lib/util/devutil.js
index b9fdb225..20f204aa 100644
--- a/lib/util/devutil.js
+++ b/lib/util/devutil.js
@@ -120,7 +120,10 @@ devutil.waitForProcsToDie = function(adb, serial, comm, bin) {
   return devutil.listPidsByComm(adb, serial, comm, bin)
     .then(function(pids) {
       if (pids.length) {
-        return devutil.waitForProcsToDie(adb, serial, comm, bin)
+        return Promise.delay(100)
+          .then(function() {
+            return devutil.waitForProcsToDie(adb, serial, comm, bin)
+          })
       }
     })
 }
@@ -140,8 +143,8 @@ devutil.killProcsByComm = function(adb, serial, comm, bin, mode) {
         .then(function() {
           return devutil.waitForProcsToDie(adb, serial, comm, bin)
         })
-        .timeout(1000)
-        .then(function() {
+        .timeout(2000)
+        .catch(function() {
           return devutil.killProcsByComm(adb, serial, comm, bin, -9)
         })
     })