diff --git a/src/module/mifare.cpp b/src/module/mifare.cpp
index e2b0552..fbc470d 100644
--- a/src/module/mifare.cpp
+++ b/src/module/mifare.cpp
@@ -108,11 +108,11 @@ QMap<QString, QString> Mifare::info(bool isRequiringOutput)
         for(auto line = lineList.begin(); line != lineList.end(); line++)
         {
             if(line->contains("UID"))
-                map["UID"] = line->replace("UID", "").replace(QRegularExpression("[^0-9a-fA-F]"), "").trimmed();
+                map["UID"] = line->remove("UID").remove(QRegularExpression("[^0-9a-fA-F]")).trimmed();
             else if(line->contains("ATQA"))
-                map["ATQA"] = line->replace("ATQA", "").replace(QRegularExpression("[^0-9a-fA-F]"), "").trimmed();
+                map["ATQA"] = line->remove("ATQA").remove(QRegularExpression("[^0-9a-fA-F]")).trimmed();
             else if(line->contains("SAK"))
-                map["SAK"] = line->replace("SAK", "").replace(QRegularExpression("\\[.+?\\]"), "").replace(QRegularExpression("[^0-9a-fA-F]"), "").trimmed();
+                map["SAK"] = line->remove("SAK").remove(QRegularExpression("\\[.+?\\]")).remove(QRegularExpression("[^0-9a-fA-F]")).trimmed();
         }
     }
     else
diff --git a/src/ui/mainwindow.cpp b/src/ui/mainwindow.cpp
index 1285d97..1b08764 100644
--- a/src/ui/mainwindow.cpp
+++ b/src/ui/mainwindow.cpp
@@ -625,7 +625,7 @@ void MainWindow::on_MF_dataWidget_itemChanged(QTableWidgetItem *item)
     }
     else if(item->column() == 2)
     {
-        QString data = item->text().replace(" ", "").toUpper();
+        QString data = item->text().remove(" ").toUpper();
         if(data == "" || mifare->data_isDataValid(data) == Mifare::DATA_NOSPACE)
         {
             mifare->data_setData(item->row(), data);
@@ -645,7 +645,7 @@ void MainWindow::on_MF_keyWidget_itemChanged(QTableWidgetItem *item)
 {
     if(item->column() == 1)
     {
-        QString key = item->text().replace(" ", "").toUpper();
+        QString key = item->text().remove(" ").toUpper();
         if(key == "" || mifare->data_isKeyValid(key))
         {
             mifare->data_setKey(item->row(), Mifare::KEY_A, key);
@@ -658,7 +658,7 @@ void MainWindow::on_MF_keyWidget_itemChanged(QTableWidgetItem *item)
     }
     else if(item->column() == 2)
     {
-        QString key = item->text().replace(" ", "").toUpper();
+        QString key = item->text().remove(" ").toUpper();
         if(key == "" || mifare->data_isKeyValid(key))
         {
             mifare->data_setKey(item->row(), Mifare::KEY_B, key);