diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1630653..2a955ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,7 +45,7 @@ set_package_properties(OpenEXR PROPERTIES
     TYPE OPTIONAL
     PURPOSE "Required for the QImage plugin for OpenEXR images"
 )
-
+add_definitions(-DQT_NO_FOREACH)
 add_subdirectory(src)
 if (BUILD_TESTING)
     add_subdirectory(autotests)
diff --git a/autotests/readtest.cpp b/autotests/readtest.cpp
index 05458e0..3743068 100644
--- a/autotests/readtest.cpp
+++ b/autotests/readtest.cpp
@@ -127,7 +127,8 @@ int main(int argc, char ** argv)
         << "Starting basic read tests for "
         << suffix << " images *********\n";
 
-    foreach (QFileInfo fi, imgdir.entryInfoList()) {
+    const QFileInfoList lstImgDir = imgdir.entryInfoList();
+    for (const QFileInfo &fi : lstImgDir) {
         int suffixPos = fi.filePath().count() - suffix.count();
         QString inputfile = fi.filePath();
         QString expfile = fi.filePath().replace(suffixPos, suffix.count(), QStringLiteral("png"));
diff --git a/autotests/writetest.cpp b/autotests/writetest.cpp
index 0816e1c..f0ed07c 100644
--- a/autotests/writetest.cpp
+++ b/autotests/writetest.cpp
@@ -73,8 +73,8 @@ int main(int argc, char ** argv)
     QTextStream(stdout) << "********* "
         << "Starting basic write tests for "
         << suffix << " images *********\n";
-
-    foreach (QFileInfo fi, imgdir.entryInfoList()) {
+    const QFileInfoList lstImgDir = imgdir.entryInfoList();
+    for (const QFileInfo &fi : lstImgDir) {
         int suffixPos = fi.filePath().count() - suffix.count();
         QString pngfile = fi.filePath().replace(suffixPos, suffix.count(), QStringLiteral("png"));
         QString pngfilename = QFileInfo(pngfile).fileName();
diff --git a/src/imageformats/pic.cpp b/src/imageformats/pic.cpp
index 3a14492..c901e31 100644
--- a/src/imageformats/pic.cpp
+++ b/src/imageformats/pic.cpp
@@ -173,9 +173,9 @@ static QDataStream &operator<< (QDataStream &s, const QList<PicChannel> &channel
     return s;
 }
 
-static bool readRow(QDataStream &stream, QRgb *row, quint16 width, QList<PicChannel> channels)
+static bool readRow(QDataStream &stream, QRgb *row, quint16 width, const QList<PicChannel> &channels)
 {
-    Q_FOREACH(const PicChannel &channel, channels) {
+    for(const PicChannel &channel : channels) {
         auto readPixel = [&] (QDataStream &str) -> QRgb {
             quint8 red = 0;
             if (channel.code & RED) {
@@ -242,7 +242,7 @@ bool SoftimagePICHandler::read(QImage *image)
     }
 
     QImage::Format fmt = QImage::Format_RGB32;
-    Q_FOREACH(const PicChannel &channel, m_channels) {
+    for (const PicChannel &channel : qAsConst(m_channels)) {
         if (channel.size != 8) {
             // we cannot read images that do not come in bytes
             qDebug() << "Channel size was" << channel.size;
@@ -388,8 +388,8 @@ void SoftimagePICHandler::setOption(ImageOption option, const QVariant &value)
             break;
         case Description: {
             m_description.clear();
-            QStringList entries = value.toString().split(QStringLiteral("\n\n"));
-            Q_FOREACH(const QString entry, entries) {
+            const QStringList entries = value.toString().split(QStringLiteral("\n\n"));
+            for (const QString &entry : entries) {
                 if (entry.startsWith(QStringLiteral("Description: "))) {
                     m_description = entry.mid(13).simplified().toUtf8();
                 }
@@ -425,7 +425,7 @@ QVariant SoftimagePICHandler::option(ImageOption option) const
             return QString();
         case ImageFormat:
             if (const_cast<SoftimagePICHandler*>(this)->readChannels()) {
-                Q_FOREACH (const PicChannel &channel, m_channels) {
+                for (const PicChannel &channel : qAsConst(m_channels)) {
                     if (channel.code & ALPHA) {
                         return QImage::Format_ARGB32;
                     }
diff --git a/tests/imageconverter.cpp b/tests/imageconverter.cpp
index 0982b27..739c7f0 100644
--- a/tests/imageconverter.cpp
+++ b/tests/imageconverter.cpp
@@ -64,11 +64,13 @@ int main(int argc, char **argv)
     if (parser.isSet(listformats)) {
         QTextStream out(stdout);
         out << "Input formats:\n";
-        foreach (const QByteArray &fmt, QImageReader::supportedImageFormats()) {
+        const auto lstReaderSupportedFormats = QImageReader::supportedImageFormats();
+        for (const QByteArray &fmt : lstReaderSupportedFormats) {
             out << "  " << fmt << '\n';
         }
         out << "Output formats:\n";
-        foreach (const QByteArray &fmt, QImageWriter::supportedImageFormats()) {
+        const auto lstWriterSupportedFormats = QImageWriter::supportedImageFormats();
+        for (const QByteArray &fmt : lstWriterSupportedFormats) {
             out << "  " << fmt << '\n';
         }
         return 0;
diff --git a/tests/imagedump.cpp b/tests/imagedump.cpp
index a8580ea..0d16ec9 100644
--- a/tests/imagedump.cpp
+++ b/tests/imagedump.cpp
@@ -72,7 +72,8 @@ int main(int argc, char **argv)
     if (parser.isSet(listformats)) {
         QTextStream out(stdout);
         out << "File formats:\n";
-        foreach (const QByteArray &fmt, QImageReader::supportedImageFormats()) {
+        const QList<QByteArray> lstSupportedFormats = QImageReader::supportedImageFormats();
+        for (const QByteArray &fmt : lstSupportedFormats) {
             out << "  " << fmt << '\n';
         }
         return 0;