diff --git a/src/CipherDialog.cpp b/src/CipherDialog.cpp
index 7fdff133..4e159a33 100644
--- a/src/CipherDialog.cpp
+++ b/src/CipherDialog.cpp
@@ -3,7 +3,7 @@
 #include "sqlitedb.h"
 
 #include <QPushButton>
-#include <QRegExpValidator>
+#include <QRegularExpressionValidator>
 
 #include <QtCore/qmath.h>
 
@@ -11,7 +11,7 @@ CipherDialog::CipherDialog(QWidget* parent, bool encrypt) :
     QDialog(parent),
     ui(new Ui::CipherDialog),
     encryptMode(encrypt),
-    rawKeyValidator(new QRegExpValidator(QRegExp("0x[a-fA-F0-9]+")))
+    rawKeyValidator(new QRegularExpressionValidator(QRegularExpression("\\A(0x[a-fA-F0-9]+)\\Z")))
 {
     ui->setupUi(this);
 
diff --git a/src/CipherDialog.h b/src/CipherDialog.h
index 50fccae6..ac7adc97 100644
--- a/src/CipherDialog.h
+++ b/src/CipherDialog.h
@@ -5,7 +5,7 @@
 
 #include "CipherSettings.h"
 
-class QRegExpValidator;
+class QRegularExpressionValidator;
 
 namespace Ui {
 class CipherDialog;
@@ -26,7 +26,7 @@ public:
 private:
     Ui::CipherDialog* ui;
     bool encryptMode;
-    QRegExpValidator* rawKeyValidator;
+    QRegularExpressionValidator* rawKeyValidator;
 
 private slots:
     void checkInputFields();
diff --git a/src/ColumnDisplayFormatDialog.cpp b/src/ColumnDisplayFormatDialog.cpp
index 5ec19cc8..6476fa30 100644
--- a/src/ColumnDisplayFormatDialog.cpp
+++ b/src/ColumnDisplayFormatDialog.cpp
@@ -105,7 +105,7 @@ void ColumnDisplayFormatDialog::accept()
     // Users could still devise a way to break this, but this is considered good enough for letting them know about simple incorrect
     // cases.
     if(!(ui->editDisplayFormat->text() == sqlb::escapeIdentifier(column_name) ||
-         ui->editDisplayFormat->text().contains(QRegExp("[a-z]+[a-z_0-9]* *\\(.*" + QRegExp::escape(sqlb::escapeIdentifier(column_name)) + ".*\\)", Qt::CaseInsensitive))))
+         ui->editDisplayFormat->text().contains(QRegularExpression("[a-z]+[a-z_0-9]* *\\(.*" + QRegularExpression::escape(sqlb::escapeIdentifier(column_name)) + ".*\\)", QRegularExpression::CaseInsensitiveOption))))
         errorMessage = tr("Custom display format must contain a function call applied to %1").arg(sqlb::escapeIdentifier(column_name));
     else {
         // Execute a query using the display format and check that it only returns one column.