diff --git a/repos/libports/lib/mk/qoost.mk b/repos/libports/lib/mk/qoost.mk
index f24f3b29ed..e0ea641ed7 100644
--- a/repos/libports/lib/mk/qoost.mk
+++ b/repos/libports/lib/mk/qoost.mk
@@ -1 +1,4 @@
 # this library contains only header files
+
+# needed for missing port detection
+QOOST_PORT_DIR := $(call select_from_ports,qoost)