-#include <output/charts/plot-hist.h>
-#include <output/chart-item-provider.h>
-
-#include <libpspp/cast.h>
-#include <math/histogram.h>
-#include <math/moments.h>
+#include "libpspp/cast.h"
+#include "math/histogram.h"
+#include "math/moments.h"
+#include "output/chart-item-provider.h"
+#include "output/charts/plot-hist.h"