diff --git a/libk3b/plugin/libsamplerate/samplerate.h b/libk3b/plugin/libsamplerate/samplerate.h
index dfc4448..e345d85 100644
--- a/libk3b/plugin/libsamplerate/samplerate.h
+++ b/libk3b/plugin/libsamplerate/samplerate.h
@@ -99,7 +99,7 @@ int src_set_ratio (SRC_STATE *state, double new_ratio) ;
 int src_reset (SRC_STATE *state) ;
 
 /*
-** Return TRUE if ratio is a valid conversion ratio, FALSE
+** Return true if ratio is a valid conversion ratio, false
 ** otherwise.
 */
 
diff --git a/plugins/decoder/flac/k3bflacdecoder.cpp b/plugins/decoder/flac/k3bflacdecoder.cpp
index 6a95854..2d814d8 100644
--- a/plugins/decoder/flac/k3bflacdecoder.cpp
+++ b/plugins/decoder/flac/k3bflacdecoder.cpp
@@ -166,7 +166,7 @@ K3bFLACDecoder::Private::seek_callback(FLAC__uint64 absolute_byte_offset) {
 #else
 FLAC__StreamDecoderSeekStatus 
 K3bFLACDecoder::Private::seek_callback(FLAC__uint64 absolute_byte_offset) {
-  if(file->at(absolute_byte_offset) == FALSE)
+  if(file->at(absolute_byte_offset) == false)
     return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
   else
     return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
diff --git a/src/k3bdiskinfoview.cpp b/src/k3bdiskinfoview.cpp
index 41c908f..a2a5e0e 100644
--- a/src/k3bdiskinfoview.cpp
+++ b/src/k3bdiskinfoview.cpp
@@ -109,7 +109,7 @@ public:
         newWidth += listView()->columnWidth( i );
       }
 
-      // TODO: find a way to get the TRUE new width after resizing
+      // TODO: find a way to get the true new width after resizing
 
       //       TQRect r = p->clipRegion().boundingRect();
       //       r.setWidth( newWidth );
diff --git a/src/k3bfiletreecombobox.cpp b/src/k3bfiletreecombobox.cpp
index ed534dc..5c9f384 100644
--- a/src/k3bfiletreecombobox.cpp
+++ b/src/k3bfiletreecombobox.cpp
@@ -304,7 +304,7 @@ void K3bFileTreeComboBox::mousePressEvent( TQMouseEvent* e )
   if ( e->button() != TQt::LeftButton )
     return;
   if ( d->ignoreNextMouseClick ) {
-    d->ignoreNextMouseClick = FALSE;
+    d->ignoreNextMouseClick = false;
     return;
   }
 
@@ -318,7 +318,7 @@ void K3bFileTreeComboBox::mousePressEvent( TQMouseEvent* e )
 
   if ( arrowRect.contains( e->pos() ) ) {
     popup();
-    repaint( FALSE );
+    repaint( false );
   }
 }
 
@@ -349,7 +349,7 @@ void K3bFileTreeComboBox::paintEvent( TQPaintEvent* )
     flags |= TQStyle::Style_HasFocus;
 
   if ( width() < 5 || height() < 5 ) {
-    qDrawShadePanel( &p, rect(), g, FALSE, 2,
+    qDrawShadePanel( &p, rect(), g, false, 2,
 		     &g.brush( TQColorGroup::Button ) );
     return;
   }
@@ -375,7 +375,7 @@ void K3bFileTreeComboBox::paintEvent( TQPaintEvent* )
 //       item->paint( &p );
 //     }
 //   } else if ( d->listBox() && d->listBox()->item( 0 ) ) {
-    p.setClipping( FALSE );
+    p.setClipping( false );
     TQListBoxItem * item = listBox()->item( 0 );
     const TQPixmap *pix = item->pixmap();
     if ( pix ) {
@@ -385,7 +385,7 @@ void K3bFileTreeComboBox::paintEvent( TQPaintEvent* )
 		    ( re.height() - pix->height() ) / 2, *pix );
     }
 //   }
-  p.setClipping( FALSE );
+  p.setClipping( false );
 }
 
 
diff --git a/src/k3bjobprogressdialog.cpp b/src/k3bjobprogressdialog.cpp
index a45a76d..0db12e1 100644
--- a/src/k3bjobprogressdialog.cpp
+++ b/src/k3bjobprogressdialog.cpp
@@ -644,7 +644,7 @@ void K3bJobProgressDialog::hide()
   KDialog::hide();
   
   if ( in_loop ) {
-    in_loop = FALSE;
+    in_loop = false;
     TQApplication::eventLoop()->exitLoop();
   }
 }
diff --git a/src/k3bjobprogressdialog.h b/src/k3bjobprogressdialog.h
index f9942ab..6ab9b23 100644
--- a/src/k3bjobprogressdialog.h
+++ b/src/k3bjobprogressdialog.h
@@ -55,7 +55,7 @@ class K3bJobProgressDialog : public KDialog, public K3bJobHandler
   K3bJobProgressDialog( TQWidget* parent = 0, 
 			const char* name = 0, 
 			bool showSubProgress = true, 
-			bool modal = FALSE, 
+			bool modal = false, 
 			WFlags fl = 0 );
   virtual ~K3bJobProgressDialog();
 
diff --git a/src/rip/k3bpatternparser.cpp b/src/rip/k3bpatternparser.cpp
index fd256a4..286e80b 100644
--- a/src/rip/k3bpatternparser.cpp
+++ b/src/rip/k3bpatternparser.cpp
@@ -198,7 +198,7 @@ TQString K3bPatternParser::parsePattern( const K3bCddbResultEntry& entry,
   bool isIncluded;
 
   static TQRegExp conditionrx( "^[@|!][atyegrmx](?:='.*')?\\{" );
-  conditionrx.setMinimal( TRUE );
+  conditionrx.setMinimal( true );
 
   for( unsigned int i = 0; i < dir.length(); ++i ) {
 
@@ -282,7 +282,7 @@ TQString K3bPatternParser::parsePattern( const K3bCddbResultEntry& entry,
 
       dir.replace( offset, length, ( isIncluded ? inclusion : TQString("") ) );
 
-      if( isIncluded == TRUE )
+      if( isIncluded == true )
         i -= length - inclusion.length();
       else
         i = offset - 1; // start next loop at offset