diff --git a/src/xheader.c b/src/xheader.c
index 1ad6be80..64b2d7a7 100644
--- a/src/xheader.c
+++ b/src/xheader.c
@@ -26,10 +26,6 @@
 
 #include "common.h"
 
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-#include <obstack.h>
-
 #include <fnmatch.h>
 
 static bool xheader_protected_pattern_p (char const *pattern);