diff --git a/ChangeLog b/ChangeLog
index c91159320d..36852b78d0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 1999-09-10  Ulrich Drepper  <drepper@cygnus.com>
 
+	* elf/elf.h (SHF_MASKOS): Added.
+
 	* sysdeps/unix/sysv/linux/sys/raw.h (RAW_MAJOR): Added.
 
 1999-09-08  Andreas Jaeger  <aj@arthur.rhein-neckar.de>
diff --git a/elf/elf.h b/elf/elf.h
index b4bca9f0d8..503e9ecf56 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -312,6 +312,7 @@ typedef struct
 #define SHF_EXECINSTR	(1 << 2)	/* Executable */
 #define SHF_MERGE	(1 << 4)	/* Might be merged */
 #define SHF_STRINGS	(1 << 5)	/* Contains nul-terminated strings */
+#define SHF_MASKOS	0x0ff00000	/* OS-specific.  */
 #define SHF_MASKPROC	0xf0000000	/* Processor-specific */
 
 /* Symbol table entry.  */