diff --git a/protocols/kspdmp.js b/protocols/kspdmp.js
index 8038252a..f0f9efc4 100644
--- a/protocols/kspdmp.js
+++ b/protocols/kspdmp.js
@@ -23,5 +23,6 @@ export default class kspdmp extends Core {
         state.players.push({ name })
       }
     }
+    state.numplayers = state.players.length
   }
 }