--- busybox-1.19.2/applets/applet_tables.c
+++ busybox-1.19.2-buildsys/applets/applet_tables.c
@@ -80,8 +80,15 @@ int main(int argc, char **argv)
 
 	printf("#define NUM_APPLETS %u\n", NUM_APPLETS);
 	if (NUM_APPLETS == 1) {
+		char *dash_to_underscore, *p;
 		printf("#define SINGLE_APPLET_STR \"%s\"\n", applets[0].name);
-		printf("#define SINGLE_APPLET_MAIN %s_main\n", applets[0].name);
+		/* Example: "ether-wake" -> "ether_wake" */
+		p = dash_to_underscore = strdup(applets[0].name);
+		p--;
+		while (*++p)
+			if (*p == '-')
+				*p = '_';
+		printf("#define SINGLE_APPLET_MAIN %s_main\n", dash_to_underscore);
 	}
 	printf("\n");