Index: sources/test_regression/19042005/Makefile
===================================================================
--- sources/test_regression/19042005/Makefile	(revision 32)
+++ sources/test_regression/19042005/Makefile	(revision 43)
@@ -14,5 +14,5 @@
 
 test : system.vcd system_systemcass.x-60_reference.vcd
-	diff system.vcd system_systemcass.x-60_reference.vcd
+	-diff system.vcd system_systemcass.x-60_reference.vcd
 
 %.vcd : %_systemcass.x %_systemc.x