diff --git a/overviewer_core/src/overviewer.h b/overviewer_core/src/overviewer.h
index ce5d662..af5b418 100644
--- a/overviewer_core/src/overviewer.h
+++ b/overviewer_core/src/overviewer.h
@@ -30,8 +30,8 @@
 
 /* Python PIL, and numpy headers */
 #include <Python.h>
-#include <Imaging.h>
 #include <numpy/arrayobject.h>
+#include <Imaging.h>
 
 /* like (a * b + 127) / 255), but much faster on most platforms
    from PIL's _imaging.c */