diff --git a/src/security/intel/Makefile.inc b/src/security/intel/Makefile.inc
index 9388d3f..e00802a 100644
--- a/src/security/intel/Makefile.inc
+++ b/src/security/intel/Makefile.inc
@@ -1 +1,2 @@
 subdirs-y += txt
+subdirs-y += stm