diff --git a/modules/base/tool.go b/modules/base/tool.go
index 8145522e2..cf2972990 100644
--- a/modules/base/tool.go
+++ b/modules/base/tool.go
@@ -224,7 +224,7 @@ func SizedAvatarLinkWithDomain(email string, size int) string {
 
 // FileSize calculates the file size and generate user-friendly string.
 func FileSize(s int64) string {
-	return humanize.IBytes(uint64(s))
+	return humanize.Bytes(uint64(s))
 }
 
 // PrettyNumber produces a string form of the given number in base 10 with