diff --git a/validate/tools/launcher/apps/gst-validate.py b/validate/tools/launcher/apps/gst-validate.py
index dc27e251aa..ea3f361f15 100644
--- a/validate/tools/launcher/apps/gst-validate.py
+++ b/validate/tools/launcher/apps/gst-validate.py
@@ -51,7 +51,7 @@ class PlaybinDescriptor(PipelineDescriptor):
     def get_pipeline(self, options, protocol, scenario, uri):
         pipe = self._pipeline
         if options.mute:
-            fakesink = "fakesink sync=true"
+            fakesink = "'fakesink sync=true'"
             pipe += " audio-sink=%s video-sink=%s" %(fakesink, fakesink)
 
         pipe += " uri=%s" % uri
diff --git a/validate/tools/launcher/baseclasses.py b/validate/tools/launcher/baseclasses.py
index 63196ab83e..1c60037b7b 100644
--- a/validate/tools/launcher/baseclasses.py
+++ b/validate/tools/launcher/baseclasses.py
@@ -24,6 +24,7 @@ import sys
 import re
 import time
 import utils
+import signal
 import urlparse
 import subprocess
 import reporters
@@ -199,18 +200,18 @@ class Test(Loggable):
         printc(message, Colors.OKBLUE)
 
         try:
-            self.process = subprocess.Popen(self.command,
+            self.process = subprocess.Popen("exec " + self.command,
                                             stderr=self.reporter.out,
                                             stdout=self.reporter.out,
                                             shell=True,
                                             env=proc_env)
             self.wait_process()
         except KeyboardInterrupt:
-            self.process.kill()
+            self.process.send_signal(signal.SIGINT)
             raise
 
         try:
-            self.process.terminate()
+            self.process.send_signal(signal.SIGINT)
         except OSError:
             pass