diff --git a/src/userprog/process.c b/src/userprog/process.c
index 6c8ef2d..7dced36 100644
--- a/src/userprog/process.c
+++ b/src/userprog/process.c
@@ -81,12 +81,12 @@ start_process (void *file_name_)
   char *saveptr;
   char *arg = strtok_r (file_name_, " ", &saveptr);
   
-  char file_name[15];
-  strlcpy (file_name, arg, 15);
+  char file_name[FNAME_MAX_LEN + 1];
+  strlcpy (file_name, arg, FNAME_MAX_LEN + 1);
 
   /* TODO: Move naming of thread to process_execute, so start
     tokenizing there. */
-  strlcpy (thread_current ()->name, file_name, 15);
+  strlcpy (thread_current ()->name, file_name, FNAME_MAX_LEN + 1);
 
   /* Initialize interrupt frame and load executable. */
   memset (&if_, 0, sizeof if_);