diff --git a/firmware/application/src/app_cmd.c b/firmware/application/src/app_cmd.c
index f9b8ee0d..42b0b67b 100644
--- a/firmware/application/src/app_cmd.c
+++ b/firmware/application/src/app_cmd.c
@@ -235,12 +235,8 @@ static data_frame_tx_t *cmd_processor_hf14a_scan(uint16_t cmd, uint16_t status,
 }
 
 static data_frame_tx_t *cmd_processor_mf1_detect_support(uint16_t cmd, uint16_t status, uint16_t length, uint8_t *data) {
-    uint8_t support;
-    status = check_std_mifare_nt_support((bool *)&support);
-    if (status != HF_TAG_OK) {
-        return data_frame_make(cmd, status, 0, NULL);
-    }
-    return data_frame_make(cmd, HF_TAG_OK, sizeof(support), &support);
+    status = check_std_mifare_nt_support();
+    return data_frame_make(cmd, status, 0, NULL);
 }
 
 static data_frame_tx_t *cmd_processor_mf1_detect_prng(uint16_t cmd, uint16_t status, uint16_t length, uint8_t *data) {
diff --git a/firmware/application/src/rfid/reader/hf/mf1_toolbox.c b/firmware/application/src/rfid/reader/hf/mf1_toolbox.c
index 473262fc..e8906345 100644
--- a/firmware/application/src/rfid/reader/hf/mf1_toolbox.c
+++ b/firmware/application/src/rfid/reader/hf/mf1_toolbox.c
@@ -609,7 +609,7 @@ uint8_t check_tag_response_nt(picc_14a_tag_t *tag, uint32_t *nt) {
 * Lost card hf_tag_no and wrong status hf_errstat
 *
 */
-uint8_t check_std_mifare_nt_support(bool *support) {
+uint8_t check_std_mifare_nt_support(void) {
     uint32_t nt1 = 0;
 
     // Find card, search on the field
@@ -617,13 +617,8 @@ uint8_t check_std_mifare_nt_support(bool *support) {
         return HF_TAG_NO;
     }
 
-    // Get NT
-    uint8_t status = check_tag_response_nt(p_tag_info, &nt1);
-    if (status == HF_TAG_NO) {
-        return HF_TAG_NO;
-    }
-    *support = status == HF_TAG_OK;
-    return HF_TAG_OK;
+    // Get NT and return status
+    return check_tag_response_nt(p_tag_info, &nt1);
 }
 
 /**
diff --git a/firmware/application/src/rfid/reader/hf/mf1_toolbox.h b/firmware/application/src/rfid/reader/hf/mf1_toolbox.h
index 0f28a26f..48dfb7cd 100644
--- a/firmware/application/src/rfid/reader/hf/mf1_toolbox.h
+++ b/firmware/application/src/rfid/reader/hf/mf1_toolbox.h
@@ -91,7 +91,7 @@ uint8_t nested_recover_key(NESTED_CORE_PARAM_DEF, mf1_nested_core_t ncs[SETS_NR]
 uint8_t static_nested_recover_key(NESTED_CORE_PARAM_DEF, mf1_static_nested_core_t *sncs);
 
 uint8_t check_prng_type(mf1_prng_type_t *type);
-uint8_t check_std_mifare_nt_support(bool *support);
+uint8_t check_std_mifare_nt_support();
 void antenna_switch_delay(uint32_t delay_ms);
 uint8_t auth_key_use_522_hw(uint8_t block, uint8_t type, uint8_t *key);
 
diff --git a/software/script/chameleon_cmd.py b/software/script/chameleon_cmd.py
index 367e78f6..5417e42b 100644
--- a/software/script/chameleon_cmd.py
+++ b/software/script/chameleon_cmd.py
@@ -508,16 +508,13 @@ def hf14a_scan(self):
             resp.data = data
         return resp
 
-    @expect_response(chameleon_status.Device.HF_TAG_OK)
     def mf1_detect_support(self):
         """
         Detect whether it is mifare classic tag
         :return:
         """
         resp = self.device.send_cmd_sync(DATA_CMD_MF1_DETECT_SUPPORT)
-        if resp.status == chameleon_status.Device.HF_TAG_OK:
-            resp.data, = struct.unpack('!?', resp.data)
-        return resp
+        return resp.status == chameleon_status.Device.HF_TAG_OK
 
     @expect_response(chameleon_status.Device.HF_TAG_OK)
     def mf1_detect_prng(self):