diff --git a/chalk/plugins/filters/wavefilter/wavefilter.cc b/chalk/plugins/filters/wavefilter/wavefilter.cc
index a7a9264e9..ad7f732a0 100644
--- a/chalk/plugins/filters/wavefilter/wavefilter.cc
+++ b/chalk/plugins/filters/wavefilter/wavefilter.cc
@@ -57,7 +57,7 @@ class KisWaveCurve {
 
 class KisSinusoidalWaveCurve : public KisWaveCurve {
     public:
-        KisSinusoidalWaveCurve(int amplitude, int wavelenght, int shift) : m_amplitude(amplitude), m_wavelength(wavelenght), m_shift(shift)
+        KisSinusoidalWaveCurve(int amplitude, int wavelength, int shift) : m_amplitude(amplitude), m_wavelength(wavelength), m_shift(shift)
         {
         }
         virtual double valueAt(int x, int y)
@@ -70,7 +70,7 @@ class KisSinusoidalWaveCurve : public KisWaveCurve {
 
 class KisTriangleWaveCurve : public KisWaveCurve {
     public:
-        KisTriangleWaveCurve(int amplitude, int wavelenght, int shift) :  m_amplitude(amplitude), m_wavelength(wavelenght), m_shift(shift)
+        KisTriangleWaveCurve(int amplitude, int wavelength, int shift) :  m_amplitude(amplitude), m_wavelength(wavelength), m_shift(shift)
         {
         }
         virtual double valueAt(int x, int y)
diff --git a/filters/kspread/applixspread/applixspreadimport.cc b/filters/kspread/applixspread/applixspreadimport.cc
index 5b88d11c1..b5978b86f 100644
--- a/filters/kspread/applixspread/applixspreadimport.cc
+++ b/filters/kspread/applixspread/applixspreadimport.cc
@@ -151,12 +151,12 @@ KoFilter::ConversionStatus APPLIXSPREADImport::convert( const TQCString& from, c
           // Delete  '('
           mystr.remove (0, 1);
 
-          int alllenght;
+          int alllength;
           TQString mystrn;
 
-          // Remember lenght of the string
-          alllenght = mystr.length ();
-          if (alllenght >= 80-1)
+          // Remember length of the string
+          alllength = mystr.length ();
+          if (alllength >= 80-1)
           {
               kdDebug()<< " Line >= 80 chars \n";
             int ok = true;
@@ -187,7 +187,7 @@ KoFilter::ConversionStatus APPLIXSPREADImport::convert( const TQCString& from, c
 
           // Delete typeformat infos incl. Space
           mystr.remove (0, pos+1);
-          // alllenght = alllenght - pos - 1;
+          // alllength = alllength - pos - 1;
 
           // Search for ':'
           pos = mystr.find (':');
@@ -197,7 +197,7 @@ KoFilter::ConversionStatus APPLIXSPREADImport::convert( const TQCString& from, c
 
           // Delete cellnumber informations
           mystr.remove (0, pos+1);
-          // alllenght = alllenght - pos - 1;
+          // alllength = alllength - pos - 1;
 
 
           // Split Table and Cell Number
diff --git a/filters/kword/kword1.3/import/kword13format.h b/filters/kword/kword1.3/import/kword13format.h
index b3bbc6f53..91818efdf 100644
--- a/filters/kword/kword1.3/import/kword13format.h
+++ b/filters/kword/kword1.3/import/kword13format.h
@@ -34,7 +34,7 @@ public:
     KWord13Format(void);
     virtual ~KWord13Format(void);
 public:
-    /// Get lenght of format (1 except for texts)
+    /// Get length of format (1 except for texts)
     virtual int length( void );
     /**
      * Get a pointer to the data correponding to \<FORMAT id="1"\>
diff --git a/filters/kword/kword1.3/import/kword13formatone.h b/filters/kword/kword1.3/import/kword13formatone.h
index 682ef8872..d92153add 100644
--- a/filters/kword/kword1.3/import/kword13formatone.h
+++ b/filters/kword/kword1.3/import/kword13formatone.h
@@ -65,7 +65,7 @@ public:
     KWord13FormatOne(void);
     virtual ~KWord13FormatOne(void);
 public:
-    /// Get lenght of format
+    /// Get length of format
     virtual int length( void );
     /**
      * Get a pointer to the data correponding to \<FORMAT id="1"\>
diff --git a/kspread/kspread_cell.cc b/kspread/kspread_cell.cc
index 0c5de5e6e..7e2d85cd6 100644
--- a/kspread/kspread_cell.cc
+++ b/kspread/kspread_cell.cc
@@ -4180,7 +4180,7 @@ TQString Cell::textDisplaying( TQPainter &_painter )
   for ( int i = d->strOutText.length(); i != 0; i-- ) {
     tmp = d->strOutText.left( i );
 
-    // 4 equals lenght of red triangle +1 pixel
+    // 4 equals length of red triangle +1 pixel
     if ( format()->sheet()->doc()->unzoomItX( fm.width( tmp ) ) < w - 4.0 - 1.0 )
       return tmp;
   }
diff --git a/kword/KWDocument.h b/kword/KWDocument.h
index 3a32522e2..d81d28c5f 100644
--- a/kword/KWDocument.h
+++ b/kword/KWDocument.h
@@ -730,7 +730,7 @@ public:
     TQStringList listOfBookmarkName(KWViewMode * viewMode) const;
 
     void paragraphDeleted( KoTextParag *parag, KWFrameSet *frm);
-    void paragraphModified(KoTextParag* parag, int /*KoTextParag::ParagModifyType*/ type, int start, int lenght);
+    void paragraphModified(KoTextParag* parag, int /*KoTextParag::ParagModifyType*/ type, int start, int length);
 
     void initBookmarkList();
     void loadImagesFromStore( KoStore *store );
diff --git a/kword/KWTextFrameSet.cpp b/kword/KWTextFrameSet.cpp
index 540794f13..a9f3e6ace 100644
--- a/kword/KWTextFrameSet.cpp
+++ b/kword/KWTextFrameSet.cpp
@@ -177,9 +177,9 @@ void KWTextFrameSet::init()
              TQT_SLOT( slotParagraphModified(KoTextParag*, int, int, int) ));
 }
 
-void KWTextFrameSet::slotParagraphModified(KoTextParag* _parag, int /*KoTextParag::ParagModifyType*/ _type, int start, int lenght)
+void KWTextFrameSet::slotParagraphModified(KoTextParag* _parag, int /*KoTextParag::ParagModifyType*/ _type, int start, int length)
 {
-    kWordDocument()->paragraphModified(_parag, _type, start, lenght);
+    kWordDocument()->paragraphModified(_parag, _type, start, length);
 }
 
 void KWTextFrameSet::slotParagraphCreated(KoTextParag* /*_parag*/)
diff --git a/lib/kofficecore/KoPictureEps.h b/lib/kofficecore/KoPictureEps.h
index 23dfdaf4d..51e578d10 100644
--- a/lib/kofficecore/KoPictureEps.h
+++ b/lib/kofficecore/KoPictureEps.h
@@ -107,7 +107,7 @@ private:
      *
      * @param array the array which is read
      * @param start start position of the PostScript stream
-     * @param lenght lenght of the PostScript stream
+     * @param length length of the PostScript stream
      * @param pos current position (which is also returned)
      * @param lastCharWasCr defines if the previous line ended with a Carriage Return,
      *   to skip an eventual Line Feed at the start of this line