diff --git a/bin/omarchy-agent b/bin/omarchy-agent
index 6fe737af..8a8de05a 100755
--- a/bin/omarchy-agent
+++ b/bin/omarchy-agent
@@ -108,8 +108,12 @@ deepcode)
   [[ -n ${prompt:-} ]] && command+=("$prompt")
   ;;
 dim)
-  command=(dim)
-  [[ -n ${prompt:-} ]] && command+=("$prompt")
+  # `dim exec` is the documented one-shot prompt form
+  if [[ -n ${prompt:-} ]]; then
+    command=(dim exec "$prompt")
+  else
+    command=(dim)
+  fi
   ;;
 *)
   echo "Unsupported default agent: $agent" >&2