diff --git a/armsrc/lfsampling.c b/armsrc/lfsampling.c
index e8d507b29..08fb1dd94 100644
--- a/armsrc/lfsampling.c
+++ b/armsrc/lfsampling.c
@@ -23,8 +23,10 @@ Default LF config is set to:
     averaging = YES
     divisor = 95 (125kHz)
     trigger_threshold = 0
+    samples_to_skip = 0
+    verbose = YES
     */
-sample_config config = { 1, 8, 1, LF_DIVISOR_125, 0, 0 } ;
+sample_config config = { 1, 8, 1, LF_DIVISOR_125, 0, 0, 1} ;
 
 void printConfig() {
     uint32_t d = config.divisor;
@@ -59,7 +61,8 @@ void setSamplingConfig(sample_config *sc) {
     config.averaging = sc->averaging;
     if (config.bits_per_sample > 8) config.bits_per_sample = 8;
 
-    printConfig();
+    if (sc->verbose)
+        printConfig();
 }
 
 sample_config *getSamplingConfig() {
diff --git a/include/pm3_cmd.h b/include/pm3_cmd.h
index a6d59aa05..c92a1faee 100644
--- a/include/pm3_cmd.h
+++ b/include/pm3_cmd.h
@@ -119,6 +119,7 @@ typedef struct {
     int divisor;
     int trigger_threshold;
     uint32_t samples_to_skip;
+    bool verbose;
 } PACKED sample_config;
 /*
 typedef struct {
@@ -488,6 +489,7 @@ typedef struct {
 #define CMD_HF_MIFARE_CHKKEYS_FAST                                        0x0625
 
 #define CMD_HF_MIFARE_SNIFF                                               0x0630
+#define CMD_HF_MIFARE_MFKEY                                               0x0631
 //ultralightC
 #define CMD_HF_MIFAREUC_AUTH                                              0x0724
 //0x0725 and 0x0726 no longer used