diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d7b1b3f2209..cea831d4bf4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-12-12 David Daney  <ddaney@avtrex.com>
+
+	* config/mips/mips.h (ASM_OUTPUT_EXTERNAL): Undefine it before
+	define.
+
 2006-12-12  Andrew Pinski  <pinskia@gmail.com>
 
 	* tree-vect-transform.c (vect_permute_load_chain):
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 4905966cbfe..f01349bb0db 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -2519,6 +2519,7 @@ while (0)
    the assembler uses length information on externals to allocate in
    data/sdata bss/sbss, thereby saving exec time.  */
 
+#undef ASM_OUTPUT_EXTERNAL
 #define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \
   mips_output_external(STREAM,DECL,NAME)