diff --git a/meta/recipes-sato/rxvt-unicode/rxvt-unicode_9.18.bb b/meta/recipes-sato/rxvt-unicode/rxvt-unicode_9.18.bb
index 9a4761757a..e417957f61 100644
--- a/meta/recipes-sato/rxvt-unicode/rxvt-unicode_9.18.bb
+++ b/meta/recipes-sato/rxvt-unicode/rxvt-unicode_9.18.bb
@@ -42,7 +42,9 @@ EXTRA_OECONF = "--enable-menubar --enable-xim \
 		--with-x=${STAGING_DIR_HOST}${prefix}"
 
 do_configure_prepend () {
-	cp ${S}/aclocal.m4 ${S}/acinclude.m4
+	if [ ! -e ${S}/acinclude.m4 ]; then
+		cp ${S}/aclocal.m4 ${S}/acinclude.m4
+	fi
 }
 
 do_compile_prepend () {