diff --git a/src/preprocessing/elevation/hgt_raster.cc b/src/preprocessing/elevation/hgt_raster.cc
index bc12d7a..502b10c 100644
--- a/src/preprocessing/elevation/hgt_raster.cc
+++ b/src/preprocessing/elevation/hgt_raster.cc
@@ -3,11 +3,11 @@
 #include <cstddef>
 #include <sstream>
 
-#include "osr/elevation_storage.h"
-
 #include "utl/enumerate.h"
 #include "utl/verify.h"
 
+#include "osr/elevation_storage.h"
+
 namespace osr::preprocessing::elevation {
 
 struct grid_point {