--- a/brltty.SlackBuild	2019-12-20 14:46:06.705289267 +0000
+++ b/brltty.SlackBuild	2019-12-20 14:46:38.553740237 +0000
@@ -54,6 +54,8 @@
 
 if [ "$ARCH" = "x86_64" ]; then
   LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  LIBDIRSUFFIX="64"
 else
   LIBDIRSUFFIX=""
 fi