diff --git a/client/src/cmdlf.c b/client/src/cmdlf.c
index 3cb9075a9..098a05fbc 100644
--- a/client/src/cmdlf.c
+++ b/client/src/cmdlf.c
@@ -817,7 +817,7 @@ int CmdLFRead(const char *Cmd) {
     } while (cm && kbd_enter_pressed() == false);
 
     if (ret == PM3_SUCCESS) {
-        PrintAndLogEx(SUCCESS, "Got " _YELLOW_("%u") " samples", g_GraphTraceLen);
+        PrintAndLogEx(SUCCESS, "Got " _YELLOW_("%zu") " samples", g_GraphTraceLen);
 
         if (getSignalProperties()->isnoise) {
             PrintAndLogEx(INFO, "signal looks like noise");