diff --git a/samples/tgidemo.c b/samples/tgidemo.c
index 8e663ae2c..3a042ef6f 100644
--- a/samples/tgidemo.c
+++ b/samples/tgidemo.c
@@ -5,6 +5,7 @@
 #include <ctype.h>
 #include <modload.h>
 #include <tgi.h>
+#include <tgi/tgi-kernel.h>
 
 
 
@@ -70,7 +71,7 @@ static void DoCircles (void)
         tgi_line (0, MaxY, MaxX, 0);
         tgi_setcolor (Color);
         for (I = 10; I < 240; I += 10) {
-            tgi_circle (X, Y, I);
+            tgi_ellipse (X, Y, I, tgi_imulround (I, tgi_aspectratio));
         }
 	Color = Color == COLOR_FORE ? COLOR_BACK : COLOR_FORE;
     }