diff --git a/Dockerfile.dapper b/Dockerfile.dapper
index d9ea6095c8..2627d692c3 100644
--- a/Dockerfile.dapper
+++ b/Dockerfile.dapper
@@ -19,7 +19,7 @@ ENV ARCH $DAPPER_HOST_ARCH
 ENV DAPPER_RUN_ARGS --privileged
 ENV DAPPER_ENV REPO TAG DRONE_TAG IMAGE_NAME
 ENV DAPPER_SOURCE /go/src/github.com/rancher/k3s/
-ENV DAPPER_OUTPUT ./bin ./dist ./build/out/
+ENV DAPPER_OUTPUT ./bin ./dist ./build/out
 ENV DAPPER_DOCKER_SOCKET true
 ENV HOME ${DAPPER_SOURCE}
 ENV CROSS true