diff --git a/makefile b/makefile
index 4cb7d7ac..7663424d 100644
--- a/makefile
+++ b/makefile
@@ -203,6 +203,7 @@ stage6:
 	$(VOCSTATIC) -sP ulmConditions.Mod
 	$(VOCSTATIC) -sP ulmStreamConditions.Mod
 	$(VOCSTATIC) -sP ulmTimeConditions.Mod
+	$(VOCSTATIC) -sP ulmSysConversions.Mod
 	
 	
 	#pow32 libs
diff --git a/src/lib/ulm/ulmSysConversions.Mod b/src/lib/ulm/ulmSysConversions.Mod
index 2af8eedf..0710aeac 100644
--- a/src/lib/ulm/ulmSysConversions.Mod
+++ b/src/lib/ulm/ulmSysConversions.Mod
@@ -63,7 +63,7 @@ MODULE ulmSysConversions;
       Oberon data types:
 
       a: Address
-      b: BYTE
+      b: SYS.BYTE
       B: BOOLEAN
       c: CHAR
       s: SHORTINT