diff --git a/go/storage/compact_map_perf_test.go b/go/storage/compact_map_perf_test.go
index 460085dee..e940310c0 100644
--- a/go/storage/compact_map_perf_test.go
+++ b/go/storage/compact_map_perf_test.go
@@ -4,6 +4,7 @@ import (
 	"code.google.com/p/weed-fs/go/glog"
 	"code.google.com/p/weed-fs/go/util"
 	"os"
+	"log"
 	"testing"
 )