diff --git a/src/extlib/ib_util.c b/src/extlib/ib_util.c
index fb58e93ca4..86097d90eb 100644
--- a/src/extlib/ib_util.c
+++ b/src/extlib/ib_util.c
@@ -16,7 +16,6 @@
  * All Rights Reserved.
  * Contributor(s): ______________________________________.
  */
-#include "../include/firebird.h"
 #include <stdlib.h>
 #include "ib_udf.h"