diff --git a/src/lexer.ll b/src/lexer.ll
index 5e7d049..c73f8db 100644
--- a/src/lexer.ll
+++ b/src/lexer.ll
@@ -140,7 +140,7 @@ public:
     YY_BUFFER_STATE buffer;
     int lastToken, thisToken;
     int lastPos, thisPos;
-    QString lastTokenData, thisTokenData;
+    TQString lastTokenData, thisTokenData;
 };
 
 /* Declared in function.h, implemented here in lexer.l since this is where
@@ -159,7 +159,7 @@ Lexer::Lexer(const TQString &expr) :
     m_private->lastPos = -1;
 
     m_private->thisToken = yylex();
-    m_private->thisTokenData = QString(yytext);
+    m_private->thisTokenData = TQString(yytext);
 
     if(yyCurTokenPos != 0)
     {
@@ -187,7 +187,7 @@ int Lexer::nextType()
     m_private->lastToken = m_private->thisToken;
 
     m_private->thisToken = yylex();
-    m_private->thisTokenData = QString(yytext);
+    m_private->thisTokenData = TQString(yytext);
     m_private->thisPos = yyCurTokenPos;
 
     return m_private->lastToken;
diff --git a/src/parser.yy b/src/parser.yy
index 9ab2c7d..450baca 100644
--- a/src/parser.yy
+++ b/src/parser.yy
@@ -316,7 +316,7 @@ VALUE: NUMBER { $$ = $1; }
 
 NUMBER: NUM {
     TDELocale *locale = TDEGlobal::locale();
-    QChar decimal = locale->decimalSymbol()[0];
+    TQChar decimal = locale->decimalSymbol()[0];
 
     // Replace current decimal separator with US Decimal separator to be
     // evil.