--- a/brltty.SlackBuild	2022-08-05 20:59:25.074956021 +0300
+++ b/brltty.SlackBuild	2022-09-29 23:25:25.439467053 +0300
@@ -54,6 +54,10 @@ fi
 
 if [ "$ARCH" = "x86_64" ]; then
   LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  LIBDIRSUFFIX="64"
 else
   LIBDIRSUFFIX=""
 fi