diff --git a/libexec/tmuxifier-completions b/libexec/tmuxifier-completions
index 680d5bd..3da0423 100755
--- a/libexec/tmuxifier-completions
+++ b/libexec/tmuxifier-completions
@@ -14,7 +14,7 @@ has-completions() {
 
 command="$1"
 if [ -z "$command" ]; then
-  echo "Usage: tmuxifier completions COMMAND [arg1 arg2...]" >&2
+  echo "$(tmuxifier-help completions)" >&2
   exit 1
 fi