diff --git a/xbps-src b/xbps-src
index 47681826196..0ee7af50740 100755
--- a/xbps-src
+++ b/xbps-src
@@ -290,6 +290,11 @@ check_native_arch() {
         else
             export XBPS_ARCH=$(xbps-uhelper arch)
         fi
+    elif [ "$XBPS_TARGET" = 'binary-bootstrap' ] && [ "$XBPS_TARGET_PKG" ]; then
+        # ^ special case for binary-bootstrap for e.g:
+        # x86_64 -> x86_64-musl
+        # x86_64 -> i686
+        export XBPS_ARCH=$XBPS_TARGET_PKG
     else
         LDD=$(ldd --version 2>&1|head -1)
         if [[ $LDD == *musl* ]]; then