diff --git a/Contents/Server Plugin/plugin.py b/Contents/Server Plugin/plugin.py
index 8048e9c..c9ba39c 100644
--- a/Contents/Server Plugin/plugin.py	
+++ b/Contents/Server Plugin/plugin.py	
@@ -253,7 +253,7 @@ def sendViaEmail(self, pluginAction, dev):
 		# Open the files in binary mode.  Let the MIMEImage class automatically
 		# guess the specific image type.
 		fp = open('/tmp/snap.jpg', 'rb')
-		img = MIMEImage(fp.read())
+		img = MIMEImage(fp.read(), "jpeg")
 		fp.close()
 		msg.attach(img)