diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index be1ea1ee41..75824b592f 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+Wed Oct 21 00:14:34 1992  Stu Grossman  (grossman at cygnus.com)
+
+	* xm-mips.h (offsetof):  Don't define this if __STDC__.
+
 Tue Oct 20 21:32:18 1992  K. Richard Pixley  (rich@sendai.cygnus.com)
 
 	umax native support (untested).
diff --git a/gdb/xm-mips.h b/gdb/xm-mips.h
index 030d472804..2c2e5cd707 100644
--- a/gdb/xm-mips.h
+++ b/gdb/xm-mips.h
@@ -43,7 +43,7 @@ extern void *memcpy();
 extern void *memset();
 #define	MEM_FNS_DECLARED
 
-#if !defined (offsetof)
+#if ! defined (__STDC__) && ! defined (offsetof)
 # define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
 #endif