diff --git a/mach/6500/Action b/mach/6500/Action
index 4b5665b68..0d2d2a149 100644
--- a/mach/6500/Action
+++ b/mach/6500/Action
@@ -13,6 +13,9 @@ end
 name "MSC6500 etext,edata,end library"
 dir libend
 end
-name "MSC6500 system call library"
+name "MSC6500 MON library"
 dir libmon
 end
+name "MSC6500 system call library"
+dir libsys
+end
diff --git a/mach/arm/Action b/mach/arm/Action
index f3f2ab8d7..fb64a86be 100644
--- a/mach/arm/Action
+++ b/mach/arm/Action
@@ -19,6 +19,9 @@ end
 name "ARM RiscOs library"
 dir libmon
 end
+name "ARM system call library"
+dir libsys
+end
 name "ARM floating point library"
 dir libfp
 end