diff --git a/ci/travis_linux_script b/ci/travis_linux_script
index b88c29c602..8259477019 100755
--- a/ci/travis_linux_script
+++ b/ci/travis_linux_script
@@ -14,4 +14,5 @@ make -j2 install
 
 cd $TRAVIS_BUILD_DIR
 git clean -fd
+rm -rf build
 docker run -it --mount type=bind,source="$TRAVIS_BUILD_DIR",target=/z ziglang/static-base:llvm6-1 -j2 $TRAVIS_COMMIT