diff --git a/gcc/config/i386/x-sco b/gcc/config/i386/x-sco
index 1deef3af29f..8d6e4fc6833 100644
--- a/gcc/config/i386/x-sco
+++ b/gcc/config/i386/x-sco
@@ -5,6 +5,3 @@ OLDCC = rcc $(RCCFLAGS)
 RCCFLAGS = -Dunix -Di386 -DM_UNIX -DM_I386 -DNULL=0
 CCLIBFLAGS =
 CLIB = -lPW
-
-# Seems to be needed with SCO DEV3.2v4.
-X_CFLAGS = -D__STDC__=0