diff --git a/mach/pmds4/Action b/mach/pmds4/Action
new file mode 100644
index 000000000..44e77df1c
--- /dev/null
+++ b/mach/pmds4/Action
@@ -0,0 +1,3 @@
+name "PMDS 4-4 system call library"
+dir libsys
+end