diff --git a/target/imagebuilder/files/opkg-generate-config.sh b/target/imagebuilder/files/opkg-generate-config.sh
index a385d9fa9b..d8fb0e4065 100755
--- a/target/imagebuilder/files/opkg-generate-config.sh
+++ b/target/imagebuilder/files/opkg-generate-config.sh
@@ -12,7 +12,8 @@ TARGETDIR="${1}"
 PKGARCH=
 for pkg in $TOPDIR/packages/*.ipk; do
 	if [ -f "$pkg" ]; then
-		PKGARCH="${pkg##*_}"
+		PKGARCH="${pkg##*/}"
+		PKGARCH="${PKGARCH#*_*_}"
 		PKGARCH="${PKGARCH%.ipk}"
 		[ "$PKGARCH" = all ] || break
 	fi