diff --git a/tools/mkfimg.c b/tools/mkfimg.c
index f7e08374..acc31a47 100644
--- a/tools/mkfimg.c
+++ b/tools/mkfimg.c
@@ -2,6 +2,7 @@
 #include  <string.h>
 #include  <stdlib.h>
 #include  <unistd.h>
+#include  <time.h>
 
 #include  "../floatimg.h"
 
@@ -14,7 +15,9 @@ int		verbosity;
 static int get_type(char *name)
 {
 
+#if DEBUG_LEVEL
 fprintf(stderr, ">>> %s ( '%s' )\n", __func__, name);
+#endif
 
 #define TEST(str)	( ! strcmp(name, str) )
 if TEST("black")	return T_BLACK;
@@ -38,14 +41,15 @@ int main(int argc, char *argv[])
 int		foo, opt;
 int		width, height;
 char		*fname;
-float		fvalue;
+float		fvalue = 0.00001;
 int		type = 0;
 
 FloatImg	fimg;
 
-while ((opt = getopt(argc, argv, "ht:v")) != -1) {
+while ((opt = getopt(argc, argv, "hk:t:v")) != -1) {
 	switch(opt) {
 		case 'h':	help(0);			break;
+		case 'k':	fvalue = atof(optarg);		break;
 		case 't':	type = get_type(optarg);	break;
 		case 'v':	verbosity++;			break;
 		}
@@ -67,6 +71,8 @@ width = atoi(argv[optind+1]);	height = atoi(argv[optind+2]);
 
 if (verbosity) fprintf(stderr, "making  '%s'  %d x %d\n", fname, width, height);
 
+srand48(getpid() ^ time(NULL));
+
 foo = fimg_create(&fimg, width, height, 3);
 if (foo) {
 	fprintf(stderr, "create floatimg -> %d\n", foo);