diff --git a/src/plaintolatexconverter.h b/src/plaintolatexconverter.h
--- a/src/plaintolatexconverter.h
+++ b/src/plaintolatexconverter.h
@@ -22,6 +22,7 @@
 
 #include <qmap.h>
 #include <QString>
+#include <QRegularExpression>
 
 /**
  * A class that replaces the selection in the document (plain text) by its
diff --git a/src/plaintolatexconverter.cpp b/src/plaintolatexconverter.cpp
--- a/src/plaintolatexconverter.cpp
+++ b/src/plaintolatexconverter.cpp
@@ -44,22 +44,8 @@
 QString PlainToLaTeXConverter::ConvertToLaTeX(const QString& toConv) const
 {
     QString result(toConv);
-
-    // Replacing what must be...
-    uint sSize = result.length();
-    QMap<QChar, QString>::const_iterator mapEnd = m_replaceMap.end();
-    for(uint i = 0 ; i < sSize ; ++i)
-    {
-        QMap<QChar, QString>::const_iterator it = m_replaceMap.find(result.at(i));
-
-        if(it != mapEnd) { // The character must be replaced
-            result.replace(i, 1, *it);
-            uint len = (*it).length();
-            if(1 < len) {
-                i += len - 1;
-                sSize += len - 1;
-            }
-        }
+    for(QMap<QChar, QString>::const_iterator it = m_replaceMap.cbegin(); it != m_replaceMap.cend(); ++it) {
+        result.replace(it.key(), it.value());
     }
 
     return result;