diff --git a/cjdns/Makefile b/cjdns/Makefile
index 3cffe1a6f..c6026102c 100644
--- a/cjdns/Makefile
+++ b/cjdns/Makefile
@@ -17,13 +17,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=cjdns
-PKG_VERSION:=v21.1
+PKG_VERSION:=21.1
 PKG_RELEASE:=5
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://codeload.github.com/cjdelisle/cjdns/tar.gz/$(PKG_NAME)-$(PKG_VERSION)?
+PKG_SOURCE_URL:=https://codeload.github.com/cjdelisle/cjdns/tar.gz/$(PKG_NAME)-v$(PKG_VERSION)?
 PKG_HASH:=a6158ce7847159aa44e86f74ccc7b6ded6910a230ed8f3830db53cda5838f0b0
-PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_NAME)-$(PKG_VERSION)
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_NAME)-v$(PKG_VERSION)
 
 PKG_MAINTAINER:=William Fleurant <meshnet@protonmail.com>
 PKG_LICENSE:=GPL-3.0-or-later