diff --git a/lib/nfc/parsers/plantain_4k_parser.c b/lib/nfc/parsers/plantain_4k_parser.c
index c970d74e..eddebac2 100644
--- a/lib/nfc/parsers/plantain_4k_parser.c
+++ b/lib/nfc/parsers/plantain_4k_parser.c
@@ -1,5 +1,4 @@
 #include "nfc_supported_card.h"
-#include "plantain_parser.h" // For luhn and string_push_uint64
 
 #include <gui/modules/widget.h>
 #include <nfc_worker_i.h>
@@ -121,26 +120,15 @@ bool plantain_4k_parser_parse(NfcDeviceData* dev_data) {
     FuriString* card_number_str;
     card_number_str = furi_string_alloc();
     // Should look like "361301047292848684"
-    // %llu doesn't work for some reason in sprintf, so we use string_push_uint64 instead
-    string_push_uint64(card_number, card_number_str);
+    furi_string_printf(card_number_str, "%llu", card_number);
     // Add suffix with luhn checksum (1 digit) to the card number string
     FuriString* card_number_suffix;
     card_number_suffix = furi_string_alloc();
 
-    // The number to calculate the checksum on doesn't fit into uint64_t, idk
-    //uint8_t luhn_checksum = plantain_calculate_luhn(card_number);
-
-    // // Convert luhn checksum to string
-    // FuriString* luhn_checksum_str;
-    // luhn_checksum_str = furi_string_alloc();
-    // string_push_uint64(luhn_checksum, luhn_checksum_str);
-
     furi_string_cat_printf(card_number_suffix, "-");
-    // FURI_LOG_D("plant4k", "Card checksum: %d", luhn_checksum);
     furi_string_cat_printf(card_number_str, furi_string_get_cstr(card_number_suffix));
     // Free all not needed strings
     furi_string_free(card_number_suffix);
-    // furi_string_free(luhn_checksum_str);
 
     furi_string_printf(
         dev_data->parsed_data,
diff --git a/lib/nfc/parsers/plantain_parser.c b/lib/nfc/parsers/plantain_parser.c
index 8ef8ee14..ac7a90b2 100644
--- a/lib/nfc/parsers/plantain_parser.c
+++ b/lib/nfc/parsers/plantain_parser.c
@@ -55,29 +55,6 @@ bool plantain_parser_read(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx) {
     return mf_classic_read_card(tx_rx, &reader, &nfc_worker->dev_data->mf_classic_data) == 16;
 }
 
-void string_push_uint64(uint64_t input, FuriString* output) {
-    const uint8_t base = 10;
-
-    do {
-        char c = input % base;
-        input /= base;
-
-        if(c < 10)
-            c += '0';
-        else
-            c += 'A' - 10;
-        furi_string_push_back(output, c);
-    } while(input);
-
-    // reverse string
-    for(uint8_t i = 0; i < furi_string_size(output) / 2; i++) {
-        char c = furi_string_get_char(output, i);
-        furi_string_set_char(
-            output, i, furi_string_get_char(output, furi_string_size(output) - i - 1));
-        furi_string_set_char(output, furi_string_size(output) - i - 1, c);
-    }
-}
-
 uint8_t plantain_calculate_luhn(uint64_t number) {
     // No.
     UNUSED(number);
@@ -116,26 +93,15 @@ bool plantain_parser_parse(NfcDeviceData* dev_data) {
     FuriString* card_number_str;
     card_number_str = furi_string_alloc();
     // Should look like "361301047292848684"
-    // %llu doesn't work for some reason in sprintf, so we use string_push_uint64 instead
-    string_push_uint64(card_number, card_number_str);
+    furi_string_printf(card_number_str, "%llu", card_number);
     // Add suffix with luhn checksum (1 digit) to the card number string
     FuriString* card_number_suffix;
     card_number_suffix = furi_string_alloc();
 
-    // The number to calculate the checksum on doesn't fit into uint64_t, idk
-    //uint8_t luhn_checksum = plantain_calculate_luhn(card_number);
-
-    // // Convert luhn checksum to string
-    // FuriString* luhn_checksum_str;
-    // luhn_checksum_str = furi_string_alloc();
-    // string_push_uint64(luhn_checksum, luhn_checksum_str);
-
     furi_string_cat_printf(card_number_suffix, "-");
-    // FURI_LOG_D("plant4k", "Card checksum: %d", luhn_checksum);
     furi_string_cat_printf(card_number_str, furi_string_get_cstr(card_number_suffix));
     // Free all not needed strings
     furi_string_free(card_number_suffix);
-    // furi_string_free(luhn_checksum_str);
 
     furi_string_printf(
         dev_data->parsed_data,
diff --git a/lib/nfc/parsers/plantain_parser.h b/lib/nfc/parsers/plantain_parser.h
index 65f396f1..1af8c506 100644
--- a/lib/nfc/parsers/plantain_parser.h
+++ b/lib/nfc/parsers/plantain_parser.h
@@ -8,6 +8,4 @@ bool plantain_parser_read(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx);
 
 bool plantain_parser_parse(NfcDeviceData* dev_data);
 
-void string_push_uint64(uint64_t input, FuriString* output);
-
 uint8_t plantain_calculate_luhn(uint64_t number);
diff --git a/lib/nfc/parsers/two_cities.c b/lib/nfc/parsers/two_cities.c
index 3dc97586..f5e31d51 100644
--- a/lib/nfc/parsers/two_cities.c
+++ b/lib/nfc/parsers/two_cities.c
@@ -121,26 +121,15 @@ bool two_cities_parser_parse(NfcDeviceData* dev_data) {
     FuriString* card_number_str;
     card_number_str = furi_string_alloc();
     // Should look like "361301047292848684"
-    // %llu doesn't work for some reason in sprintf, so we use string_push_uint64 instead
-    string_push_uint64(card_number, card_number_str);
+    furi_string_printf(card_number_str, "%llu", card_number);
     // Add suffix with luhn checksum (1 digit) to the card number string
     FuriString* card_number_suffix;
     card_number_suffix = furi_string_alloc();
 
-    // The number to calculate the checksum on doesn't fit into uint64_t, idk
-    //uint8_t luhn_checksum = two_cities_calculate_luhn(card_number);
-
-    // // Convert luhn checksum to string
-    // FuriString* luhn_checksum_str;
-    // luhn_checksum_str = furi_string_alloc();
-    // string_push_uint64(luhn_checksum, luhn_checksum_str);
-
     furi_string_cat_printf(card_number_suffix, "-");
-    // FURI_LOG_D("plant4k", "Card checksum: %d", luhn_checksum);
     furi_string_cat_printf(card_number_str, furi_string_get_cstr(card_number_suffix));
     // Free all not needed strings
     furi_string_free(card_number_suffix);
-    // furi_string_free(luhn_checksum_str);
 
     // =====
     // --PLANTAIN--