diff --git a/client/src/cmdlfem4x70.c b/client/src/cmdlfem4x70.c
index 5a821c985..a91550a4d 100644
--- a/client/src/cmdlfem4x70.c
+++ b/client/src/cmdlfem4x70.c
@@ -79,7 +79,8 @@ static void print_info_result(const uint8_t *data) {
 
 }
 
-int em4x70_info(void) {
+// Note: arm source has a function with same name ... different signature.
+static int em4x70_info(void) {
 
     em4x70_data_t edata = {
         .parity = false // TODO: try both? or default to true
diff --git a/client/src/cmdlfem4x70.h b/client/src/cmdlfem4x70.h
index 12599713b..3c9152f13 100644
--- a/client/src/cmdlfem4x70.h
+++ b/client/src/cmdlfem4x70.h
@@ -31,8 +31,9 @@ int CmdEM4x70Unlock(const char *Cmd);
 int CmdEM4x70Auth(const char *Cmd);
 int CmdEM4x70WritePIN(const char *Cmd);
 int CmdEM4x70WriteKey(const char *Cmd);
+//int CmdEM4x70Recover(const char *Cmd);
 
-int em4x70_info(void);
+// for `lf search`:
 bool detect_4x70_block(void);
 
 #endif