diff --git a/generators/dvi/dviRenderer_prescan.cpp b/generators/dvi/dviRenderer_prescan.cpp
index 783c7273c..bce2185e9 100644
--- a/generators/dvi/dviRenderer_prescan.cpp
+++ b/generators/dvi/dviRenderer_prescan.cpp
@@ -22,6 +22,7 @@
 #include <kprocess.h>
 
 #include <QApplication>
+#include <QByteArray>
 #include <QDir>
 #include <QFileInfo>
 #include <QImage>
@@ -44,7 +45,7 @@ void dviRenderer::prescan_embedPS(char *cp, quint8 *beginningOfSpecialCommand)
 #endif
 
   // Encapsulated Postscript File
-  if (strncasecmp(cp, "PSfile=", 7) != 0)
+  if (qstrnicmp(cp, "PSfile=", 7) != 0)
     return;
 
   QString command(cp+7);
@@ -230,7 +231,7 @@ void dviRenderer::prescan_removePageSizeInfo(char *cp, quint8 *beginningOfSpecia
 #endif
 
   // Encapsulated Postscript File
-  if (strncasecmp(cp, "papersize=", 10) != 0)
+  if (qstrnicmp(cp, "papersize=", 10) != 0)
     return;
 
   for (quint8 *ptr=beginningOfSpecialCommand; ptr<command_pointer; ptr++)
@@ -526,25 +527,25 @@ void dviRenderer::prescan_parseSpecials(char *cp, quint8 *)
   // prescan phase, and NOT during rendering.
 
   // PaperSize special
-  if (strncasecmp(cp, "papersize", 9) == 0) {
+  if (qstrnicmp(cp, "papersize", 9) == 0) {
     prescan_ParsePapersizeSpecial(special_command.mid(9));
     return;
   }
 
   // color special for background color
-  if (strncasecmp(cp, "background", 10) == 0) {
+  if (qstrnicmp(cp, "background", 10) == 0) {
     prescan_ParseBackgroundSpecial(special_command.mid(10));
     return;
   }
 
   // HTML anchor special
-  if (strncasecmp(cp, "html:<A name=", 13) == 0) {
+  if (qstrnicmp(cp, "html:<A name=", 13) == 0) {
     prescan_ParseHTMLAnchorSpecial(special_command.mid(14));
     return;
   }
 
   // Postscript Header File
-  if (strncasecmp(cp, "header=", 7) == 0) {
+  if (qstrnicmp(cp, "header=", 7) == 0) {
     prescan_ParsePSHeaderSpecial(special_command.mid(7));
     return;
   }
@@ -562,19 +563,19 @@ void dviRenderer::prescan_parseSpecials(char *cp, quint8 *)
   }
 
   // PS-Postscript inclusion
-  if (strncasecmp(cp, "ps:", 3) == 0) {
+  if (qstrnicmp(cp, "ps:", 3) == 0) {
     prescan_ParsePSSpecial(special_command);
     return;
   }
 
   // Encapsulated Postscript File
-  if (strncasecmp(cp, "PSfile=", 7) == 0) {
+  if (qstrnicmp(cp, "PSfile=", 7) == 0) {
     prescan_ParsePSFileSpecial(special_command.mid(7));
     return;
   }
 
   // source special
-  if (strncasecmp(cp, "src:", 4) == 0) {
+  if (qstrnicmp(cp, "src:", 4) == 0) {
     prescan_ParseSourceSpecial(special_command.mid(4));
     return;
   }
@@ -583,7 +584,7 @@ void dviRenderer::prescan_parseSpecials(char *cp, quint8 *)
   // both during rendering and during the pre-scan phase
 
   // HTML anchor end
-  if (strncasecmp(cp, "html:</A>", 9) == 0) {
+  if (qstrnicmp(cp, "html:</A>", 9) == 0) {
     html_anchor_end();
     return;
   }
diff --git a/generators/dvi/psgs.cpp b/generators/dvi/psgs.cpp
index b1eedc428..466e642ca 100644
--- a/generators/dvi/psgs.cpp
+++ b/generators/dvi/psgs.cpp
@@ -255,7 +255,7 @@ void ghostscript_interface::gs_generate_graphics_file(const PageNumber& page, co
     while(proc.canReadLine()) {
       GSoutput = QString::fromLocal8Bit(proc.readLine());
       if (GSoutput.contains(QStringLiteral("Unknown device"))) {
-    qCDebug(OkularDviDebug) << QStringLiteral("The version of ghostview installed on this computer does not support "
+    qCDebug(OkularDviDebug) << QString::fromLatin1("The version of ghostview installed on this computer does not support "
                                      "the '%1' ghostview device driver.").arg(*gsDevice) << endl;
 	knownDevices.erase(gsDevice);
 	gsDevice = knownDevices.begin();
diff --git a/generators/dvi/special.cpp b/generators/dvi/special.cpp
index 6a9fe69b2..522c017f6 100644
--- a/generators/dvi/special.cpp
+++ b/generators/dvi/special.cpp
@@ -20,13 +20,13 @@
 #include <QMimeType>
 #include <QMimeDatabase>
 
+#include <QByteArray>
 #include <QFile>
 #include <QFontDatabase>
 #include <QImage>
 #include <QPainter>
 #include "debug_dvi.h"
 
-
 void dviRenderer::printErrorMsgForSpecials(const QString& msg)
 {
   if (dviFile->errorCounter < 25) {
@@ -517,45 +517,45 @@ void dviRenderer::applicationDoSpecial(char *cp)
   // and NOT during the prescan phase
 
   // font color specials
-  if (strncasecmp(cp, "color", 5) == 0) {
+  if (qstrnicmp(cp, "color", 5) == 0) {
     color_special(special_command.mid(5));
     return;
   }
 
   // HTML reference
-  if (strncasecmp(cp, "html:<A href=", 13) == 0) {
+  if (qstrnicmp(cp, "html:<A href=", 13) == 0) {
     html_href_special(special_command.mid(14));
     return;
   }
 
   // HTML anchor end
-  if (strncasecmp(cp, "html:</A>", 9) == 0) {
+  if (qstrnicmp(cp, "html:</A>", 9) == 0) {
     html_anchor_end();
     return;
   }
 
   // TPIC specials
-  if (strncasecmp(cp, "pn", 2) == 0) {
+  if (qstrnicmp(cp, "pn", 2) == 0) {
     TPIC_setPen_special(special_command.mid(2));
     return;
   }
-  if (strncasecmp(cp, "pa ", 3) == 0) {
+  if (qstrnicmp(cp, "pa ", 3) == 0) {
     TPIC_addPath_special(special_command.mid(3));
     return;
   }
-  if (strncasecmp(cp, "fp", 2) == 0) {
+  if (qstrnicmp(cp, "fp", 2) == 0) {
     TPIC_flushPath_special();
     return;
   }
 
   // Encapsulated Postscript File
-  if (strncasecmp(cp, "PSfile=", 7) == 0) {
+  if (qstrnicmp(cp, "PSfile=", 7) == 0) {
     epsf_special(special_command.mid(7));
     return;
   }
 
   // source special
-  if (strncasecmp(cp, "src:", 4) == 0) {
+  if (qstrnicmp(cp, "src:", 4) == 0) {
     source_special(special_command.mid(4));
     return;
   }
@@ -694,11 +694,11 @@ void dviRenderer::applicationDoSpecial(char *cp)
   // unrecognized special commands.
   if ((cp[0] == '!') ||
       (cp[0] == '"') ||
-      (strncasecmp(cp, "html:<A name=", 13) == 0) ||
-      (strncasecmp(cp, "ps:", 3) == 0) ||
-      (strncasecmp(cp, "papersize", 9) == 0) ||
-      (strncasecmp(cp, "header", 6) == 0) ||
-      (strncasecmp(cp, "background", 10) == 0) )
+      (qstrnicmp(cp, "html:<A name=", 13) == 0) ||
+      (qstrnicmp(cp, "ps:", 3) == 0) ||
+      (qstrnicmp(cp, "papersize", 9) == 0) ||
+      (qstrnicmp(cp, "header", 6) == 0) ||
+      (qstrnicmp(cp, "background", 10) == 0) )
     return;
 
   printErrorMsgForSpecials(i18n("The special command '%1' is not implemented.", special_command));
diff --git a/generators/epub/converter.cpp b/generators/epub/converter.cpp
index 16a6b5bea..0f563fe29 100644
--- a/generators/epub/converter.cpp
+++ b/generators/epub/converter.cpp
@@ -297,7 +297,7 @@ QTextDocument* Converter::convert( const QString &fileName )
       QTextBlock before;
       if(firstPage) {
         // preHtml & postHtml make it possible to have a margin around the content of the page
-        const QString preHtml = QStringLiteral("<html><head></head><body>"
+        const QString preHtml = QString::fromLatin1("<html><head></head><body>"
                                         "<table style=\"-qt-table-type: root; margin-top:%1px; margin-bottom:%1px; margin-left:%1px; margin-right:%1px;\">"
                                         "<tr>"
                                         "<td style=\"border: none;\">").arg(mTextDocument->padding);
diff --git a/ui/latexrenderer.cpp b/ui/latexrenderer.cpp
index 8e42a9f88..fbc93b6f7 100644
--- a/ui/latexrenderer.cpp
+++ b/ui/latexrenderer.cpp
@@ -191,7 +191,7 @@ LatexRenderer::Error LatexRenderer::handleLatex( QString& fileName, const QStrin
 
 bool LatexRenderer::securityCheck( const QString &latexFormula )
 {
-    return !latexFormula.contains(QRegExp(QStringLiteral("\\\\(def|let|futurelet|newcommand|renewcommand|else|fi|write|input|include"
+    return !latexFormula.contains(QRegExp(QString::fromLatin1("\\\\(def|let|futurelet|newcommand|renewcommand|else|fi|write|input|include"
     "|chardef|catcode|makeatletter|noexpand|toksdef|every|errhelp|errorstopmode|scrollmode|nonstopmode|batchmode"
     "|read|csname|newhelp|relax|afterground|afterassignment|expandafter|noexpand|special|command|loop|repeat|toks"
     "|output|line|mathcode|name|item|section|mbox|DeclareRobustCommand)[^a-zA-Z]")));
diff --git a/ui/pageview.cpp b/ui/pageview.cpp
index 13727e464..ee7aad1b6 100644
--- a/ui/pageview.cpp
+++ b/ui/pageview.cpp
@@ -2893,7 +2893,7 @@ void PageView::mouseReleaseEvent( QMouseEvent * e )
             xs.append(1.0);
             ys.prepend(0.0);
             ys.append(1.0);
-            selHtml = QStringLiteral("<html><head>"
+            selHtml = QString::fromLatin1("<html><head>"
                       "<meta content=\"text/html; charset=utf-8\" http-equiv=\"Content-Type\">"
                       "</head><body><table>");
             for (int r=0; r+1<ys.length(); r++) {