diff --git a/meta/recipes-extended/at/at_3.2.5.bb b/meta/recipes-extended/at/at_3.2.5.bb
index 87a436173f1..c0c876a6443 100644
--- a/meta/recipes-extended/at/at_3.2.5.bb
+++ b/meta/recipes-extended/at/at_3.2.5.bb
@@ -52,8 +52,10 @@ INITSCRIPT_PARAMS = "defaults"
 
 SYSTEMD_SERVICE:${PN} = "atd.service"
 
-do_configure:prepend() {
-	cp -f ${WORKDIR}/posixtm.[ch] ${S}
+do_patch[postfuncs] += "copy_posix_files"
+
+copy_posix_files() {
+    cp -f ${WORKDIR}/posixtm.[ch] ${S}
 }
 
 do_install () {