diff --git a/testing/plib/APKBUILD b/testing/plib/APKBUILD
index 8f86ab59eeb..a55f7497a36 100644
--- a/testing/plib/APKBUILD
+++ b/testing/plib/APKBUILD
@@ -17,8 +17,10 @@ source="http://plib.sourceforge.net/dist/$pkgname-$pkgver.tar.gz
 builddir="$srcdir"/$pkgname-$pkgver
 
 prepare() {
-	cd "$builddir"
 	default_prepare || return 1
+
+	cd "$builddir"
+	update_config_guess && update_config_sub
 }
 
 build() {