1 files changed, 1 insertions, 1 deletions
diff --git a/windows.c b/windows.c
index adf66d6..844d96b 100644
--- a/windows.c
+++ b/windows.c
@@ -627,7 +627,7 @@ static void win_draw_circle(void *handle, int cx, int cy, int radius,
     win_reset_pen(fe);
 }
 
-static void win_draw_polygon(void *handle, int *coords, int npoints,
+static void win_draw_polygon(void *handle, const int *coords, int npoints,
 			     int fillcolour, int outlinecolour)
 {
     frontend *fe = (frontend *)handle;