diff --git a/util/log/src/main/scala/sbt/Logger.scala b/util/log/src/main/scala/sbt/Logger.scala
index 29d965e76..ce8201e9c 100644
--- a/util/log/src/main/scala/sbt/Logger.scala
+++ b/util/log/src/main/scala/sbt/Logger.scala
@@ -57,7 +57,11 @@ object Logger
 
 	implicit def absLog2PLog(log: AbstractLogger): ProcessLogger = new BufferedLogger(log) with ProcessLogger
 	implicit def log2PLog(log: Logger): ProcessLogger = absLog2PLog(new FullLogger(log))
-	implicit def xlog2Log(lg: xLogger): Logger = new Logger {
+	implicit def xlog2Log(lg: xLogger): Logger = lg match {
+		case l: Logger => l
+		case _ => wrapXLogger(lg)
+	}
+	private[this] def wrapXLogger(lg: xLogger): Logger = new Logger {
 		override def debug(msg: F0[String]): Unit = lg.debug(msg)
 		override def warn(msg: F0[String]): Unit = lg.warn(msg)
 		override def info(msg: F0[String]): Unit = lg.info(msg)