diff --git a/beam/examples/beamsh/beamsh.go b/beam/examples/beamsh/beamsh.go
index ef4354f..fa6a8d1 100644
--- a/beam/examples/beamsh/beamsh.go
+++ b/beam/examples/beamsh/beamsh.go
@@ -631,7 +631,7 @@ func Debugf(msg string, args ...interface{}) {
 }
 
 func Fatalf(msg string, args ...interface{})  {
-	Logf(msg, args)
+	Logf(msg, args...)
 	os.Exit(1)
 }