diff --git a/windows-collect/src/netmon/netmon.py b/windows-collect/src/netmon/netmon.py
index c27b8ded6324654a41629e360ba828dc92766f40..87713426f8d9fe3c669535514730667dc0d7d3b2 100644
--- a/windows-collect/src/netmon/netmon.py
+++ b/windows-collect/src/netmon/netmon.py
@@ -102,7 +102,7 @@ try:
 		currentDate = date.today() - timedelta(days=1)
 	else:
 		currentDate = date.today()
-	trafficFile = getTrafficFile(currentDate.strftime("%y-%m-%d"))
+	trafficFile = getTrafficFile(currentDate.strftime("%Y-%m-%d"))
 	trafficFile.write(str(intervalId)+ " " + rxPackages + " " + rxBytes + " " + txPackages + " " + txBytes +"\n")
 	trafficFile.close()
 except: