diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5bb36e60e..9cf3c2a4e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -7,7 +7,7 @@ jobs:
         environment:
           CC: ccache gcc
           CCACHE_COMPRESS: true
-          WFLAGS: -Wno-error=unused-result
+          CFLAGS: -Wno-error=unused-result
       #- image: ubuntu:trusty
       #  environment:
       #    CC: ccache gcc -m32