diff --git a/instrument-functions.c b/instrument-functions.c
index ba0a56a53..05f80e788 100644
--- a/instrument-functions.c
+++ b/instrument-functions.c
@@ -11,6 +11,9 @@
  * FOR A PARTICULAR PURPOSE.
  */
 
+/* required for bfd.h inclusion guard */
+#include <config.h>
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>