diff --git a/Build.sh b/Build.sh
index 18cae35..4c35bdb 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-# $MirOS: src/bin/mksh/Build.sh,v 1.54 2006/08/28 01:37:29 tg Exp $
+# $MirOS: src/bin/mksh/Build.sh,v 1.55 2006/09/13 23:07:10 tg Exp $
 #-
 # Environment: CC, CFLAGS, CPPFLAGS, LDFLAGS, LIBS, NROFF
 
@@ -87,8 +87,7 @@ Linux)
 	;;
 SunOS)
 	SRCS="$SRCS compat.c"
-	CPPFLAGS="$CPPFLAGS -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112L"
-	CPPFLAGS="$CPPFLAGS -D__EXTENSIONS__"
+	CPPFLAGS="$CPPFLAGS -D_BSD_SOURCE -D__EXTENSIONS__"
 	CPPFLAGS="$CPPFLAGS -D_FILE_OFFSET_BITS=64 -DNEED_COMPAT"
 	LDSTATIC=
 	sigseen=: