diff --git a/client/src/cmdlfem4x50.c b/client/src/cmdlfem4x50.c
index 03ec3f5dc..124ffe8c0 100644
--- a/client/src/cmdlfem4x50.c
+++ b/client/src/cmdlfem4x50.c
@@ -516,7 +516,7 @@ int em4x50_read(em4x50_data_t *etd, em4x50_word_t *out, bool verbose) {
 
     PacketResponseNG resp;
     if (!WaitForResponseTimeout(CMD_ACK, &resp, TIMEOUT)) {
-        PrintAndLogEx(WARNING, "timeout while waiting for reply.");
+        PrintAndLogEx(WARNING, "(em4x50) timeout while waiting for reply.");
         return PM3_ETIMEOUT;
     }