diff --git a/client/lualibs/read14a.lua b/client/lualibs/read14a.lua
index 6c44445de..5cdf5a2e4 100644
--- a/client/lualibs/read14a.lua
+++ b/client/lualibs/read14a.lua
@@ -135,7 +135,7 @@ local function disconnect14443a()
     local c = Command:newMIX{cmd = cmds.CMD_READER_ISO_14443a}
     -- We can ignore the response here, no ACK is returned for this command
     -- Check /armsrc/iso14443a.c, ReaderIso14443a() for details
-    return c.sendMIX(true)
+    return c:sendMIX(true)
 end
 
 local library = {