diff --git a/server.cpp b/server.cpp
index ba0d98a..0a67032 100644
--- a/server.cpp
+++ b/server.cpp
@@ -129,7 +129,7 @@ bool llama_model_load(const std::string & fname, llama_model & model, gpt_vocab
         uint32_t magic;
         fin.read((char *) &magic, sizeof(magic));
         if (magic != 0x67676d6c) {
-            fprintf(stderr, "%s: invalid model file '%s' (bad magic)\n", __func__, fname.c_str());
+            fprintf(stderr, "%s: invalid model file '%s' (bad magic (0x%x))\n", __func__, fname.c_str(),magic);
             return false;
         }
     }
diff --git a/utils.cpp b/utils.cpp
index 20847e5..cae5766 100644
--- a/utils.cpp
+++ b/utils.cpp
@@ -80,8 +80,8 @@ void gpt_print_usage(int argc, char ** argv, const gpt_params & params) {
     fprintf(stderr, "\n");
     fprintf(stderr, "options:\n");
     fprintf(stderr, "  -h, --help            show this help message and exit\n");
-    fprintf(stderr, "  -sp, --server-port     change the default 8080 port\n");
-    fprintf(stderr, "  -sa, --server-address     change the default 0.0.0.0 address\n");
+    fprintf(stderr, "  -sp, --server-port N    change the default 8080 port\n");
+    fprintf(stderr, "  -sa, --server-address <address>   change the default 0.0.0.0 address\n");
     fprintf(stderr, "  -r PROMPT, --reverse-prompt PROMPT\n");
     fprintf(stderr, "                        in interactive mode, poll user input upon seeing PROMPT\n");
     fprintf(stderr, "  --color               colorise output to distinguish prompt and user input from generations\n");