diff --git a/build b/build
index 1b1478a..478b98f 100755
--- a/build
+++ b/build
@@ -1,7 +1,7 @@
 #!/bin/bash -e
 
-ORG_PATH="github.com/coreos"
-REPO_PATH="${ORG_PATH}/mayday"
+ORG_PATH="${ORG_PATH:-github.com/coreos}"
+REPO_PATH="${REPO_PATH:-${ORG_PATH}/mayday}"
 
 if [ ! -h gopath/src/${REPO_PATH} ]; then
 	mkdir -p gopath/src/${ORG_PATH}