diff --git a/lib/LinkWireless.hpp b/lib/LinkWireless.hpp
index 3a9a9e4..3d38cac 100644
--- a/lib/LinkWireless.hpp
+++ b/lib/LinkWireless.hpp
@@ -447,7 +447,7 @@ class LinkWireless {
    */
   bool closeServer() {
     LINK_WIRELESS_RESET_IF_NEEDED
-    if (state != SERVING) {
+    if (state != SERVING || sessionState.serverClosed) {
       lastError = WRONG_STATE;
       return false;
     }