diff --git a/client/cmdlft55xx.c b/client/cmdlft55xx.c
index 046ee40e3..71a26ddd3 100644
--- a/client/cmdlft55xx.c
+++ b/client/cmdlft55xx.c
@@ -206,7 +206,7 @@ int usage_lf_deviceconfig(){
 	return 0;
 }
 
-CmdHelp(const char *Cmd);
+int CmdHelp(const char *Cmd);
 
 void printT5xxHeader(uint8_t page){
 	PrintAndLogEx(NORMAL, "Reading Page %d:", page);