diff --git a/common/JackDriver.cpp b/common/JackDriver.cpp
index 0d0dae04..591601f2 100644
--- a/common/JackDriver.cpp
+++ b/common/JackDriver.cpp
@@ -193,14 +193,14 @@ void JackDriverClient::RemoveSlave(JackDriverInterface* slave)
 }
 
 int JackDriverClient::ProcessSlaves()
-{
+{
 	int res = 0;
     list<JackDriverInterface*>::const_iterator it;
     for (it = fSlaveList.begin(); it != fSlaveList.end(); it++) {
         JackDriverInterface* slave = *it;
-        if ((res = slave->Process()) < 0)
-			return res;
-    }
+        if (slave->Process() < 0)
+			res = -1;
+    }
 	return res;
 }