diff --git a/Dockerfile.m4 b/Dockerfile.m4
index 65f6499..558a2f3 100644
--- a/Dockerfile.m4
+++ b/Dockerfile.m4
@@ -4,8 +4,7 @@ m4_changequote([[, ]])
 ## "build" stage
 ##################################################
 
-m4_ifdef([[CROSS_ARCH]], [[FROM docker.io/CROSS_ARCH/ubuntu:20.04]], [[FROM docker.io/ubuntu:20.04]]) AS build
-m4_ifdef([[CROSS_QEMU]], [[COPY --from=docker.io/hectormolinero/qemu-user-static:latest CROSS_QEMU CROSS_QEMU]])
+FROM docker.io/ubuntu:20.04 AS build
 
 # Install system packages
 RUN export DEBIAN_FRONTEND=noninteractive \