diff --git a/ChangeLog b/ChangeLog
index ddf571d..1e847a8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 Easy-RSA 3 ChangeLog
 
 3.1.2 (TBD)
+   * Command 'help': For unknown command, exit with error (#737)
    * Find data-files in the correct order (#727 - Reported #725)
 
 3.1.1 (2022-10-13)
diff --git a/easyrsa3/easyrsa b/easyrsa3/easyrsa
index 24dc06b..16a8515 100755
--- a/easyrsa3/easyrsa
+++ b/easyrsa3/easyrsa
@@ -417,6 +417,7 @@ cmd_help() {
 	*)
 		err_text="
   Unknown command: '$1' (try without commands for a list of commands)"
+		easyrsa_error_exit=1
 	esac
 
 	if [ "$err_text" ]; then