diff --git a/Lib/tele_2.c b/Lib/tele_2.c
index 33c0179..735bb2e 100644
--- a/Lib/tele_2.c
+++ b/Lib/tele_2.c
@@ -123,13 +123,13 @@ xmax = src->width - w;		ymax = src->height - h;
 ox = (src->width % w) / 2;
 oy = (src->height % h) / 2;
 #if DEBUG_LEVEL
-fprintf(stderr, "%s : offsets = %d %d\n", __func__, ox, oy);
+fprintf(stderr, "%s : offsets = %d & %d\n", __func__, ox, oy);
 #endif
 Image_clear(dst, grey, grey, grey);
 
-for (x=ox; x<xmax; x+=w) {
+for (x=ox; x<xmax-ox; x+=w) {
 	zone.x = x + (w/2);
-	for (y=oy; y<ymax; y+=h) {
+	for (y=oy; y<ymax-oy; y+=h) {
 		zone.y = y + (h/2);
 		r = src->Rpix[y][x] & 0xfe;
 		g = src->Gpix[y][x] & 0xfe;