diff --git a/common/common.cpp b/common/common.cpp
index 9b29d7532..f0147aa76 100644
--- a/common/common.cpp
+++ b/common/common.cpp
@@ -748,6 +748,7 @@ void gpt_print_usage(int /*argc*/, char ** argv, const gpt_params & params) {
     printf("  --nprobs N            if > 0 output the probabilities of the top N tokens\n");
     printf("  --alias               model alias (default: 'unknown')\n");
     printf("  --infill              0 (defaut) use infill mode\n");
+    printf("  --prompt-file         name of external prompt file\n");
     printf("\n");
 }
 
diff --git a/examples/cmap-example/find-implemented-args.py b/examples/cmap-example/find-implemented-args.py
index 38a83b941..a0146b777 100644
--- a/examples/cmap-example/find-implemented-args.py
+++ b/examples/cmap-example/find-implemented-args.py
@@ -106,6 +106,7 @@ def substitution_list(parameters):
                 "n_keep" : "keep",
                 "n_probs" : "nprobs",
                 "path_prompt_cache" : "prompt_cache",
+                "prompt_file" : "prompt_file",
                 "input_prefix" : "in_prefix",
                 "input_suffix" : "in_suffix",
                 "input_prefix_bos" : "in_prefix_bos",
diff --git a/help_list.txt b/help_list.txt
index 38e0f6f1d..c74199e0e 100644
--- a/help_list.txt
+++ b/help_list.txt
@@ -104,3 +104,4 @@
  --nprobs N            if > 0 output the probabilities of the top N tokens\n"
  --alias               model alias (default: 'unknown')\n"
  --infill              0 (defaut) use infill mode\n"
+ --prompt_file         name of external prompt file\n"