diff --git a/README.md b/README.md
index 2119d53..7ac0016 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,7 @@ Options:
   -p <password>  Specify password.
   -i             Enable interactive mode to prompt for missing username/password.
   -v             Enable verbose mode.
+  -v             Show program version.
   -h             Show this help.
 ```
 
diff --git a/checkpw.c b/checkpw.c
index 9da39ee..d54d23e 100644
--- a/checkpw.c
+++ b/checkpw.c
@@ -159,7 +159,7 @@ void print_usage(const char *prog_name) {
     fprintf(stderr, "  -p <password>  Specify password.\n");
     fprintf(stderr, "  -i             Enable interactive mode to prompt for missing username/password.\n");
     fprintf(stderr, "  -v             Enable verbose mode.\n");
-    fprintf(stderr, "  -V             Show version.\n");
+    fprintf(stderr, "  -V             Show program version.\n");
     fprintf(stderr, "  -h             Show this help.\n");
 }