diff --git a/models/user.go b/models/user.go
index 8aa349c8a..3e2ea82f4 100644
--- a/models/user.go
+++ b/models/user.go
@@ -97,9 +97,9 @@ func (u *User) HomeLink() string {
 // AvatarLink returns user gravatar link.
 func (u *User) AvatarLink() string {
 	if setting.DisableGravatar {
-		return "/img/avatar_default.jpg"
+		return setting.AppSubUrl + "/img/avatar_default.jpg"
 	} else if setting.Service.EnableCacheAvatar {
-		return "/avatar/" + u.Avatar
+		return setting.AppSubUrl + "/avatar/" + u.Avatar
 	}
 	return "//1.gravatar.com/avatar/" + u.Avatar
 }
diff --git a/modules/base/tool.go b/modules/base/tool.go
index eb0ac9e5b..b4083d090 100644
--- a/modules/base/tool.go
+++ b/modules/base/tool.go
@@ -146,9 +146,9 @@ func CreateTimeLimitCode(data string, minutes int, startInf interface{}) string
 // AvatarLink returns avatar link by given e-mail.
 func AvatarLink(email string) string {
 	if setting.DisableGravatar {
-		return "/img/avatar_default.jpg"
+		return setting.AppSubUrl + "/img/avatar_default.jpg"
 	} else if setting.Service.EnableCacheAvatar {
-		return "/avatar/" + EncodeMd5(email)
+		return setting.AppSubUrl + "/avatar/" + EncodeMd5(email)
 	}
 	return "//1.gravatar.com/avatar/" + EncodeMd5(email)
 }