diff --git a/CMakeLists.txt b/CMakeLists.txt
index 08824db..661e795 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -93,6 +93,7 @@ set(GTA5VIEW_SOURCES
 
 set(GTA5VIEW_HEADERS
     config.h
+    wrapper.h
     AboutDialog.h
     AppEnv.h
     CrewDatabase.h
diff --git a/MapLocationDialog.cpp b/MapLocationDialog.cpp
index 34ed1bb..7351234 100644
--- a/MapLocationDialog.cpp
+++ b/MapLocationDialog.cpp
@@ -240,8 +240,19 @@ void MapLocationDialog::mouseReleaseEvent(QMouseEvent *ev)
 
 void MapLocationDialog::wheelEvent(QWheelEvent *ev)
 {
+#if QT_VERSION >= 0x050000
     const QPoint numPixels = ev->pixelDelta();
     const QPoint numDegrees = ev->angleDelta();
+#else
+    QPoint numDegrees;
+    if (ev->orientation() == Qt::Horizontal) {
+        numDegrees.setX(ev->delta());
+    }
+    else {
+        numDegrees.setY(ev->delta());
+    }
+#endif
+#if QT_VERSION >= 0x050000
     if (!numPixels.isNull()) {
         if (numPixels.y() < 0 && zoomPercent != 100) {
             zoomPercent = zoomPercent - 10;
@@ -251,8 +262,10 @@ void MapLocationDialog::wheelEvent(QWheelEvent *ev)
             zoomPercent = zoomPercent + 10;
             repaint();
         }
+        return;
     }
-    else if (!numDegrees.isNull()) {
+#endif
+    if (!numDegrees.isNull()) {
         if (numDegrees.y() < 0 && zoomPercent != 100) {
             zoomPercent = zoomPercent - 10;
             repaint();
diff --git a/ProfileLoader.cpp b/ProfileLoader.cpp
index bc1edc1..4f2edcd 100644
--- a/ProfileLoader.cpp
+++ b/ProfileLoader.cpp
@@ -20,6 +20,7 @@
 #include "SnapmaticPicture.h"
 #include "SavegameData.h"
 #include "CrewDatabase.h"
+#include "wrapper.h"
 #include <QStringBuilder>
 #include <QStringList>
 #include <QString>
diff --git a/RagePhoto.cpp b/RagePhoto.cpp
index a7f2c21..b4e5ff8 100644
--- a/RagePhoto.cpp
+++ b/RagePhoto.cpp
@@ -837,8 +837,7 @@ void RagePhoto::uInt32ToCharLE(quint32 x, char *y)
 const QByteArray RagePhoto::stringToUtf16LE(const QString &string)
 {
 #if QT_VERSION >= 0x060000
-    QStringEncoder stringEncoder = QStringEncoder(QStringEncoder::Utf16LE);
-    return stringEncoder(string);
+    return QStringEncoder(QStringEncoder::Utf16LE)(string);
 #else
     return QTextCodec::codecForName("UTF-16LE")->fromUnicode(string);
 #endif
@@ -847,8 +846,7 @@ const QByteArray RagePhoto::stringToUtf16LE(const QString &string)
 const QString RagePhoto::utf16LEToString(const QByteArray &data)
 {
 #if QT_VERSION >= 0x060000
-    QStringDecoder stringDecoder = QStringDecoder(QStringDecoder::Utf16LE);
-    return stringDecoder(data);
+    return QStringDecoder(QStringDecoder::Utf16LE)(data);
 #else
     return QTextCodec::codecForName("UTF-16LE")->toUnicode(data);
 #endif
@@ -857,8 +855,7 @@ const QString RagePhoto::utf16LEToString(const QByteArray &data)
 const QString RagePhoto::utf16LEToString(const char *data, int size)
 {
 #if QT_VERSION >= 0x060000
-    QStringDecoder stringDecoder = QStringDecoder(QStringDecoder::Utf16LE);
-    return stringDecoder(QByteArray::fromRawData(data, size));
+    return QStringDecoder(QStringDecoder::Utf16LE)(QByteArray::fromRawData(data, size));
 #else
     return QTextCodec::codecForName("UTF-16LE")->toUnicode(data, size);
 #endif
diff --git a/SnapmaticEditor.cpp b/SnapmaticEditor.cpp
index 10414c5..f07346e 100644
--- a/SnapmaticEditor.cpp
+++ b/SnapmaticEditor.cpp
@@ -21,6 +21,7 @@
 #include "SnapmaticPicture.h"
 #include "PlayerListDialog.h"
 #include "StringParser.h"
+#include "wrapper.h"
 #include "AppEnv.h"
 #include "config.h"
 #include <QStringBuilder>
@@ -405,7 +406,7 @@ void SnapmaticEditor::on_labCrew_linkActivated(const QString &link)
                 newCrew = newCrew.split(" ").at(0);
             if (newCrew.length() > 10)
                 return;
-            for (const QChar &crewChar : newCrew) {
+            for (const QChar &crewChar : qAsConst(newCrew)) {
                 if (!crewChar.isNumber()) {
                     return;
                 }
diff --git a/gta5view.pro b/gta5view.pro
index 679cb3d..a9c9f91 100644
--- a/gta5view.pro
+++ b/gta5view.pro
@@ -25,7 +25,8 @@ DEPLOYMENT.display_name = gta5view
 TARGET = gta5view
 TEMPLATE = app
 
-HEADERS += config.h
+HEADERS += config.h \
+    wrapper.h
 PRECOMPILED_HEADER += config.h
 
 SOURCES += main.cpp \
diff --git a/wrapper.h b/wrapper.h
new file mode 100644
index 0000000..9ea0443
--- /dev/null
+++ b/wrapper.h
@@ -0,0 +1,30 @@
+/*****************************************************************************
+* gta5view Grand Theft Auto V Profile Viewer
+* Copyright (C) 2021 Syping
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*****************************************************************************/
+
+#ifndef WRAPPER_H
+#define WRAPPER_H
+
+#if QT_VERSION < 0x050700
+#if __cplusplus > 201703L
+#define qAsConst(x) std::as_const(x)
+#else
+#define qAsConst
+#endif
+#endif
+
+#endif // WRAPPER_H