diff --git a/essai.c b/essai.c
index c6520bd..b2e6287 100644
--- a/essai.c
+++ b/essai.c
@@ -22,7 +22,7 @@ fimg_draw_something(dessin);
 
 }
 /* --------------------------------------------------------------------- */
-void help(int k)
+void help(void)
 {
 puts("Options :");
 puts("\t-d WxH\timage size");
@@ -34,14 +34,14 @@ int main(int argc, char *argv[])
 {
 FloatImg	fimgA, fimgB;
 int		foo, opt;
-int		W = 800, H = 600;
+int		W = 640, H = 480;
 double		tb;
 
 while ((opt = getopt(argc, argv, "d:hv")) != -1) {
 	switch(opt) {
 		case 'd':	parse_WxH(optarg, &W, &H);
 				break;
-		case 'h':	help(0);		break;
+		case 'h':	help();		break;
 		case 'v':	verbosity++;		break;
 		}
 	}