diff --git a/Propellor/CmdLine.hs b/Propellor/CmdLine.hs
index 9708815..83ef8cb 100644
--- a/Propellor/CmdLine.hs
+++ b/Propellor/CmdLine.hs
@@ -149,7 +149,8 @@ boot props = do
 	hFlush stdout
 	reply <- hGetContentsStrict stdin
 
-	hPutStrLn stderr $ show $ B64.decode . BL.pack . s2w8 <$> fromMarked keyringMarker reply
+	hPutStrLn stderr $ show $ B64.decode . BL.pack . s2w8 . takeWhile (/= '\n')
+		<$> fromMarked keyringMarker reply
 	hFlush stderr
 
 	makePrivDataDir