diff --git a/mps/src/iam4cc.gmk b/mps/src/iam4cc.gmk
index d95487a1e69..317f5da9ceb 100644
--- a/mps/src/iam4cc.gmk
+++ b/mps/src/iam4cc.gmk
@@ -1,7 +1,7 @@
 # impl.gmk.iam4cc: BUILD FOR IRIX 6 N32/MIPS IV/CC PLATFORM
 #
-# $HopeName: MMsrc!iam4cc.gmk(trunk.7) $
-# Copyright (C) 1998.  Harlequin Group plc.  All rights reserved.
+# $HopeName: MMsrc!iam4cc.gmk(trunk.8) $
+# Copyright (C) 1998 Harlequin Limited.  All rights reserved.
 #
 # This is the GNU makefile for platform.iam4cc.
 
@@ -10,7 +10,7 @@ PFMDEFS = -n32
 
 MPMPF = mpsliban.c mpsioan.c lockan.c than.c vmi5.c \
         protan.c prmcan.c ssan.c span.c
-SWPF = lockan.c than.c vmi5.c protsw.c prmcan.c ssan.c
+SWPF = than.c vmi5.c protsw.c prmcan.c ssan.c
 
 LIBS = -lm