diff --git a/userprog/parse_arguments.c b/userprog/parse_arguments.c
index 44b83a9ed520790f45adcf00b621a3404e96ffbe..c86364fdd2408b978f019f9df3d7c09a48b0ec31 100644
--- a/userprog/parse_arguments.c
+++ b/userprog/parse_arguments.c
@@ -2,5 +2,10 @@
 
 
 int parse_arguments(const char* command_line, char**argv) {
-    #warning "Implement me"
+    /*
+     * XXX: Dummy implementation which sets argv[0] to "echo" so at least there's
+     * a filename to load.
+     */
+    argv[0] = "echo";
+    return 1;
 }