diff --git a/common/Makefile.inc b/common/Makefile.inc
index e74081d..a08a7df 100644
--- a/common/Makefile.inc
+++ b/common/Makefile.inc
@@ -9,3 +9,5 @@
 hw-y += hw-time.ads
 hw-y += hw-time.adb
 hw-y += hw-time-timer.ads
+
+hw-$(CONFIG_HWBASE_POSIX_FILE) += hw-file.ads