diff --git a/client/cmdlfem4x.h b/client/cmdlfem4x.h
index 6363e347..baea50a4 100644
--- a/client/cmdlfem4x.h
+++ b/client/cmdlfem4x.h
@@ -16,6 +16,7 @@ int CmdEMdemodASK(const char *Cmd);
 int CmdEM410xRead(const char *Cmd);
 int CmdEM410xSim(const char *Cmd);
 int CmdEM410xWatch(const char *Cmd);
+int CmdEM410xWatchnSpoof(const char *Cmd);
 int CmdEM410xWrite(const char *Cmd);
 int CmdEM4x50Read(const char *Cmd);
 int CmdReadWord(const char *Cmd);