diff --git a/net/siit/Makefile b/net/siit/Makefile
index e3d13005f..a890a257b 100644
--- a/net/siit/Makefile
+++ b/net/siit/Makefile
@@ -36,7 +36,7 @@ define Build/Prepare
 endef
 
 define Build/Compile
-	$(MAKE) $(KERNEL_MAKEOPTS) SUBDIRS="$(PKG_BUILD_DIR)" modules
+	$(MAKE) $(KERNEL_MAKEOPTS) M="$(PKG_BUILD_DIR)" modules
 endef
 
 $(eval $(call KernelPackage,siit))