diff --git a/ice40/arch.cc b/ice40/arch.cc
index 786d8ba1..64a2a4be 100644
--- a/ice40/arch.cc
+++ b/ice40/arch.cc
@@ -19,13 +19,13 @@
 
 #include <algorithm>
 #include <cmath>
+#include "cells.h"
 #include "gfx.h"
 #include "log.h"
 #include "nextpnr.h"
 #include "placer1.h"
 #include "router1.h"
 #include "util.h"
-#include "cells.h"
 NEXTPNR_NAMESPACE_BEGIN
 
 // -----------------------------------------------------------------------