diff --git a/src/opengl/qopenglengineshadermanager.cpp b/src/opengl/qopenglengineshadermanager.cpp
index cf7424adb13..679c39385d9 100644
--- a/src/opengl/qopenglengineshadermanager.cpp
+++ b/src/opengl/qopenglengineshadermanager.cpp
@@ -454,11 +454,9 @@ QOpenGLEngineShaderProg *QOpenGLEngineSharedShaders::findProgramInCache(const QO
             if (!inCache)
                 shaderCache.store(newProg->program, QOpenGLContext::currentContext());
         } else {
-            QString error;
-            error = QLatin1String("Shader program failed to link")
-                    + QLatin1String("  Error Log:\n")
-                    + QLatin1String("    ") + newProg->program->log();
-            qWarning() << error;
+            qWarning("Shader program failed to link\n"
+                    "  Error Log:\n"
+                    "    %ls", qUtf16Printable(newProg->program->log()));
             break;
         }
 
diff --git a/src/opengl/qopenglshaderprogram.cpp b/src/opengl/qopenglshaderprogram.cpp
index 5cb539b5db6..d4dee6c6744 100644
--- a/src/opengl/qopenglshaderprogram.cpp
+++ b/src/opengl/qopenglshaderprogram.cpp
@@ -61,6 +61,8 @@
 
 QT_BEGIN_NAMESPACE
 
+using namespace Qt::StringLiterals;
+
 /*!
     \class QOpenGLShaderProgram
     \brief The QOpenGLShaderProgram class allows OpenGL shader programs to be linked and used.
@@ -398,7 +400,7 @@ bool QOpenGLShaderPrivate::compile(QOpenGLShader *q)
         if (logBuffer)
             log = QString::fromLatin1(logBuffer);
         else
-            log = QLatin1String("failed");
+            log = u"failed"_s;
 
         if (name.isEmpty())
             qWarning("QOpenGLShader::compile(%s): %s", type, qPrintable(log));
@@ -579,7 +581,7 @@ static QVersionDirectivePosition findVersionDirectivePosition(const char *source
         case CommentEnding:
             if (*c == '/')
                 state = Normal;
-            else if (*c != QLatin1Char('*'))
+            else if (*c != u'*')
                 state = MultiLineComment;
             break;
         }
diff --git a/src/opengl/qopengltextureglyphcache.cpp b/src/opengl/qopengltextureglyphcache.cpp
index 6c8971fddb9..54efe524ff6 100644
--- a/src/opengl/qopengltextureglyphcache.cpp
+++ b/src/opengl/qopengltextureglyphcache.cpp
@@ -345,11 +345,11 @@ void QOpenGLTextureGlyphCache::resizeTextureData(int width, int height)
             {
                 QString source;
 #ifdef Q_OS_WASM
-                source.append(QLatin1String(isCoreProfile ? qopenglslUntransformedPositionVertexShader_core : qopenglslUntransformedPositionVertexShader));
-                source.append(QLatin1String(isCoreProfile ? qopenglslMainWithTexCoordsVertexShader_core : qopenglslMainWithTexCoordsVertexShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslUntransformedPositionVertexShader_core : qopenglslUntransformedPositionVertexShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslMainWithTexCoordsVertexShader_core : qopenglslMainWithTexCoordsVertexShader));
 #else
-                source.append(QLatin1String(isCoreProfile ? qopenglslMainWithTexCoordsVertexShader_core : qopenglslMainWithTexCoordsVertexShader));
-                source.append(QLatin1String(isCoreProfile ? qopenglslUntransformedPositionVertexShader_core : qopenglslUntransformedPositionVertexShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslMainWithTexCoordsVertexShader_core : qopenglslMainWithTexCoordsVertexShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslUntransformedPositionVertexShader_core : qopenglslUntransformedPositionVertexShader));
 #endif
                 m_blitProgram->addCacheableShaderFromSourceCode(QOpenGLShader::Vertex, source);
             }
@@ -357,11 +357,11 @@ void QOpenGLTextureGlyphCache::resizeTextureData(int width, int height)
             {
                 QString source;
 #ifdef Q_OS_WASM
-                source.append(QLatin1String(isCoreProfile ? qopenglslImageSrcFragmentShader_core : qopenglslImageSrcFragmentShader));
-                source.append(QLatin1String(isCoreProfile ? qopenglslMainFragmentShader_core : qopenglslMainFragmentShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslImageSrcFragmentShader_core : qopenglslImageSrcFragmentShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslMainFragmentShader_core : qopenglslMainFragmentShader));
 #else
-                source.append(QLatin1String(isCoreProfile ? qopenglslMainFragmentShader_core : qopenglslMainFragmentShader));
-                source.append(QLatin1String(isCoreProfile ? qopenglslImageSrcFragmentShader_core : qopenglslImageSrcFragmentShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslMainFragmentShader_core : qopenglslMainFragmentShader));
+                source.append(QLatin1StringView(isCoreProfile ? qopenglslImageSrcFragmentShader_core : qopenglslImageSrcFragmentShader));
 #endif
                 m_blitProgram->addCacheableShaderFromSourceCode(QOpenGLShader::Fragment, source);
             }