diff --git a/zio.c b/zio.c
index 516c4a0..e4621ae 100644
--- a/zio.c
+++ b/zio.c
@@ -26,6 +26,7 @@
  * SUCH DAMAGE.
  */
 
+#include "build-pre.h"
 #include "custom_unistd.h"
 #include <errno.h>
 #include <fcntl.h>
diff --git a/zio.h b/zio.h
index 35f232f..0cb7bbd 100644
--- a/zio.h
+++ b/zio.h
@@ -33,7 +33,6 @@
 extern "C" {
 #endif
 
-#include "build-pre.h"
 #include <sys/types.h>
 #include <time.h>