diff --git a/ada/Makefile.inc b/ada/Makefile.inc
index 2233094..2dd0c5a 100644
--- a/ada/Makefile.inc
+++ b/ada/Makefile.inc
@@ -5,3 +5,5 @@
 hw-$(CONFIG_HWBASE_TIMER_MUTIME) += $(muen-common-path)/musinfo/musinfo.ads
 hw-$(CONFIG_HWBASE_TIMER_MUTIME) += $(muen-common-path)/muschedinfo/muschedinfo.ads
 hw-$(CONFIG_HWBASE_TIMER_MUTIME) += mutime/hw-time-timer.adb
+
+hw-$(CONFIG_HWBASE_POSIX_FILE) += posix/hw-file.adb