diff --git a/ChangeLog.alpha b/ChangeLog.alpha
index a1732f90e8..ae6839df43 100644
--- a/ChangeLog.alpha
+++ b/ChangeLog.alpha
@@ -1,5 +1,7 @@
 2012-02-08  Richard Henderson  <rth@twiddle.net>
 
+	* sysdeps/alpha/dl-tls.h (TLS_DTV_UNALLOCATED): New.
+
 	* sysdeps/unix/sysv/linux/alpha/configure.in: New file.
 	* sysdeps/unix/sysv/linux/alpha/configure: Build.
 	* sysdeps/unix/sysv/linux/alpha/kernel-features.h: Protect from
diff --git a/sysdeps/alpha/dl-tls.h b/sysdeps/alpha/dl-tls.h
index f81f95d75e..d40d0a4ac5 100644
--- a/sysdeps/alpha/dl-tls.h
+++ b/sysdeps/alpha/dl-tls.h
@@ -25,5 +25,7 @@ typedef struct
   unsigned long int ti_offset;
 } tls_index;
 
-
 extern void *__tls_get_addr (tls_index *ti);
+
+/* Value used for dtv entries for which the allocation is delayed.  */
+#define TLS_DTV_UNALLOCATED	((void *) -1l)