diff -rup ~joystick-20051019/utils/jscal.c joystick-20051019/utils/jscal.c
--- jscal.c	2009-05-19 12:07:27.000000000 +0200
+++ jscal.c	2009-05-19 18:01:28.000000000 +0200
@@ -355,7 +355,7 @@ void print_mappings(char *devicename)
 	}
 	if (ioctl(fd, JSIOCGBTNMAP, &buttonmap)) {
 		perror("jscal: error getting button map");
-		exit(1);
+		//exit(1);
 	}
 
 	printf("jscal -u %d", axes);
@@ -457,13 +457,14 @@ void set_mappings(char *p)
 	sscanf(++p, "%d", &btns_on_cl);
 	p = strstr(p, ",");
 
-	if (btns_on_cl != buttons) {
+	if ((btns_on_cl != buttons)&&(btns_on_cl!=-1)) {
 		fprintf(stderr, "jscal: joystick has %d buttons and not %d as specified on command line\n", 
 			buttons, btns_on_cl);
 		exit(1);
 	}
 
-
+if(btns_on_cl!=-1)
+{
 	for (i = 0; i < buttons; i++)
   {
 		if (!p) {
@@ -484,7 +485,7 @@ void set_mappings(char *p)
 		}
 		buttonmap[i] = btn_mapping;
 	}
-
+}
 	if (p) {
 		fprintf(stderr, "jscal: too many values\n");
 		exit(1);
@@ -494,11 +495,14 @@ void set_mappings(char *p)
 		perror("jscal: error setting axis map");
 		exit(1);
 	}
+if(btns_on_cl!=-1)
+{
 	if (ioctl(fd, JSIOCSBTNMAP, &buttonmap)) {
 		perror("jscal: error setting button map");
 		exit(1);
 	}
 }
+}
 
 void set_correction(char *p)
 {