diff --git a/makefile b/makefile
index 3a6219bc..6ee0a4ea 100644
--- a/makefile
+++ b/makefile
@@ -137,6 +137,7 @@ stage6:
 	$(VOCSTATIC) -sP ulmASCII.Mod ulmSets.Mod
 	$(VOCSTATIC) -sP ulmObjects.Mod ulmDisciplines.Mod
 	$(VOCSTATIC) -sP ulmPriorities.Mod ulmServices.Mod ulmEvents.Mod ulmResources.Mod  ulmForwarders.Mod ulmRelatedEvents.Mod
+	$(VOCSTATIC) -sP ulmIO.Mod
 
 stage7:
 	#objects := $(wildcard *.o)
diff --git a/makefile.gnuc.armv6j_hardfp b/makefile.gnuc.armv6j_hardfp
index 3dc4f3fa..65593b17 100644
--- a/makefile.gnuc.armv6j_hardfp
+++ b/makefile.gnuc.armv6j_hardfp
@@ -137,6 +137,7 @@ stage6:
 	$(VOCSTATIC) -sP ulmASCII.Mod ulmSets.Mod
 	$(VOCSTATIC) -sP ulmObjects.Mod ulmDisciplines.Mod
 	$(VOCSTATIC) -sP ulmPriorities.Mod ulmServices.Mod ulmEvents.Mod ulmResources.Mod  ulmForwarders.Mod ulmRelatedEvents.Mod
+	$(VOCSTATIC) -sP ulmIO.Mod
 
 stage7:
 	#objects := $(wildcard *.o)
diff --git a/makefile.gnuc.armv7a_hardfp b/makefile.gnuc.armv7a_hardfp
index 6713bc99..29ef4520 100644
--- a/makefile.gnuc.armv7a_hardfp
+++ b/makefile.gnuc.armv7a_hardfp
@@ -137,6 +137,7 @@ stage6:
 	$(VOCSTATIC) -sP ulmASCII.Mod ulmSets.Mod
 	$(VOCSTATIC) -sP ulmObjects.Mod ulmDisciplines.Mod
 	$(VOCSTATIC) -sP ulmPriorities.Mod ulmServices.Mod ulmEvents.Mod ulmResources.Mod  ulmForwarders.Mod ulmRelatedEvents.Mod
+	$(VOCSTATIC) -sP ulmIO.Mod
 
 stage7:
 	#objects := $(wildcard *.o)
diff --git a/makefile.gnuc.x86 b/makefile.gnuc.x86
index a43aac34..e5964812 100644
--- a/makefile.gnuc.x86
+++ b/makefile.gnuc.x86
@@ -137,6 +137,7 @@ stage6:
 	$(VOCSTATIC) -sP ulmASCII.Mod ulmSets.Mod
 	$(VOCSTATIC) -sP ulmObjects.Mod ulmDisciplines.Mod
 	$(VOCSTATIC) -sP ulmPriorities.Mod ulmServices.Mod ulmEvents.Mod ulmResources.Mod  ulmForwarders.Mod ulmRelatedEvents.Mod
+	$(VOCSTATIC) -sP ulmIO.Mod
 
 stage7:
 	#objects := $(wildcard *.o)
diff --git a/src/lib/ulm/ulmSYSTEM.Mod b/src/lib/ulm/ulmSYSTEM.Mod
deleted file mode 100644
index a7086abf..00000000
--- a/src/lib/ulm/ulmSYSTEM.Mod
+++ /dev/null
@@ -1,12 +0,0 @@
-MODULE ulmSYSTEM;
-IMPORT SYSTEM(*, ulmObjects, ulmDisciplines, Console*);
-
-  PROCEDURE TAS*(VAR flag:BOOLEAN): BOOLEAN; (* added for compatibility with ulmSYSTEM module; noch *)
-  VAR oldflag : BOOLEAN;
-  BEGIN
-     oldflag := flag;
-     flag := TRUE;
-     RETURN oldflag;
-  END TAS;
-
-END ulmSYSTEM.