diff --git a/lib/nfc/protocols/mf_plus/mf_plus.c b/lib/nfc/protocols/mf_plus/mf_plus.c
index d0ee4c9c3..98b7cd82a 100644
--- a/lib/nfc/protocols/mf_plus/mf_plus.c
+++ b/lib/nfc/protocols/mf_plus/mf_plus.c
@@ -46,7 +46,7 @@ const NfcDeviceBase nfc_device_mf_plus = {
     .get_base_data = (NfcDeviceGetBaseData)mf_plus_get_base_data,
 };
 
-MfPlusData* mf_plus_alloc() {
+MfPlusData* mf_plus_alloc(void) {
     MfPlusData* data = malloc(sizeof(MfPlusData));
     data->device_name = furi_string_alloc();
     data->iso14443_4a_data = iso14443_4a_alloc();
diff --git a/lib/nfc/protocols/mf_plus/mf_plus.h b/lib/nfc/protocols/mf_plus/mf_plus.h
index 11e22cbe1..828d1c070 100644
--- a/lib/nfc/protocols/mf_plus/mf_plus.h
+++ b/lib/nfc/protocols/mf_plus/mf_plus.h
@@ -88,7 +88,7 @@ typedef struct {
 
 extern const NfcDeviceBase nfc_device_mf_plus;
 
-MfPlusData* mf_plus_alloc();
+MfPlusData* mf_plus_alloc(void);
 
 void mf_plus_free(MfPlusData* data);