Fix some warnings.

[pspp-builds.git] / src / language / stats / frequencies.q

diff --git a/src/language/stats/frequencies.q b/src/language/stats/frequencies.q
index b34299322db347a58940144109afc5e971beb053..375530bc859861a5939aea051b6b1e9ba690fa31 100644 (file)
--- a/src/language/stats/frequencies.q
+++ b/src/language/stats/frequencies.q
@@ -54,6 +54,7 @@
 #include <output/charts/piechart.h>
 #include <output/chart.h>
 #include <output/charts/plot-hist.h>
+#include <math/histogram.h>
 
 #include "gettext.h"
 #define _(msgid) gettext (msgid)