diff --git a/.travis.yml b/.travis.yml
index adbf1cb..ec3265f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,7 +22,6 @@ script:
 matrix:
   include:
     - name: linux-ppc64le-gcc-9
-      os: linux
       arch: ppc64le
       compiler: gcc
       env: CC=gcc-9