diff --git a/.travis.yml b/.travis.yml
index a580e40d..0c26a94f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,6 @@ python:
   - 2.6
   - 2.7
   - 3.2
-env: HTTBIN_URL=http://httpbin.org/
+env: HTTPBIN_URL=http://httpbin.org/
 script: make lazy
 install: pip install -r requirements.txt --use-mirrors