diff --git a/src/observer/main.cpp b/src/observer/main.cpp
index 3f6c64dbdf..74d97c6c67 100644
--- a/src/observer/main.cpp
+++ b/src/observer/main.cpp
@@ -158,7 +158,7 @@ static void get_opts_setting(struct option long_opts[], char short_opts[], const
       {"rs_list", 'r', 1},
       {"mode", 'm', 1},
       {"scn", 'f', 1},
-      {"version", 'V', 0},
+      {"version", 'v', 0},
       {"ipv6", '6', 0},
   };