diff --git a/src/fenrirscreenreader/soundDriver/genericDriver.py b/src/fenrirscreenreader/soundDriver/genericDriver.py
index d3eec5f6..c599fe9b 100644
--- a/src/fenrirscreenreader/soundDriver/genericDriver.py
+++ b/src/fenrirscreenreader/soundDriver/genericDriver.py
@@ -37,7 +37,7 @@ class driver(soundDriver):
             word = word.replace('fenrirFreqDuration', str(duration))
             word = word.replace('fenrirFrequence', str(frequence))
             popenFrequenceCommand[idx] = word        
-        self.proc = subprocess.Popen(popenFrequenceCommand, shell=False)
+        self.proc = subprocess.Popen(popenFrequenceCommand, stdin=None, stdout=None, stderr=None, shell=False)
         self.soundType = 'frequence'
     def playSoundFile(self, filePath, interrupt = True):
         if not self._initialized:
diff --git a/src/fenrirscreenreader/speechDriver/genericDriver.py b/src/fenrirscreenreader/speechDriver/genericDriver.py
index 31f16db9..3aaecfbe 100644
--- a/src/fenrirscreenreader/speechDriver/genericDriver.py
+++ b/src/fenrirscreenreader/speechDriver/genericDriver.py
@@ -180,7 +180,7 @@ class driver(speechDriver):
             try:
                 self.env['runtime']['debug'].writeDebugOut('speechDriver:worker:' + ' '.join(popenSpeechCommand),debug.debugLevel.INFO)                                            
                 self.lock.acquire(True)
-                self.proc = Popen(popenSpeechCommand, shell=False)
+                self.proc = Popen(popenSpeechCommand, stdin=None, stdout=None, stderr=None, shell=False)
                 self.lock.release()	
                 self.proc.wait()
             except Exception as e: