diff --git a/config/sources/families/sun8i.conf b/config/sources/families/sun8i.conf
index a06e305861..992489746e 100644
--- a/config/sources/families/sun8i.conf
+++ b/config/sources/families/sun8i.conf
@@ -1,5 +1,8 @@
 source "${BASH_SOURCE%/*}/include/sunxi_common.inc"
-OVERLAY_PREFIX='sun8i-h3'
+
+if [[ -z ${OVERLAY_PREFIX} ]]; then
+	OVERLAY_PREFIX='sun8i-h3'
+fi
 
 [[ -z $CPUMIN ]] && CPUMIN=480000
 [[ -z $CPUMAX ]] && CPUMAX=1400000