diff --git a/testing/cc65/APKBUILD b/testing/cc65/APKBUILD
index e73de9d54cc..49392b9be27 100644
--- a/testing/cc65/APKBUILD
+++ b/testing/cc65/APKBUILD
@@ -12,7 +12,7 @@ source="$pkgname-$pkgver.tar.gz::https://github.com/cc65/cc65/archive/V$pkgver.t
 
 build() {
 	# the build system does not work in parallel
-	make -j1
+	PREFIX=/usr make -j1
 }
 
 check() {
@@ -21,7 +21,7 @@ check() {
 }
 
 package() {
-	PREFIX="$pkgdir" make install
+	PREFIX="$pkgdir/usr" make install
 }
 
 sha512sums="