diff --git a/kate/part/katehighlight.cpp b/kate/part/katehighlight.cpp
index 17208412c..d5eec4c27 100644
--- a/kate/part/katehighlight.cpp
+++ b/kate/part/katehighlight.cpp
@@ -1404,7 +1404,7 @@ void KateHighlighting::doHighlight ( KateTextLine *prevLine,
   const TQString& text = textLine->string();
   const int len = textLine->length();
 
-  // calc at which char the first char occurs, set it to lenght of line if never
+  // calc at which char the first char occurs, set it to length of line if never
   const int firstChar = textLine->firstChar();
   const int startNonSpace = (firstChar == -1) ? len : firstChar;
 
diff --git a/kate/part/kateundo.cpp b/kate/part/kateundo.cpp
index 379df16f0..c37fb556c 100644
--- a/kate/part/kateundo.cpp
+++ b/kate/part/kateundo.cpp
@@ -35,7 +35,7 @@
      * @param type undo item type
      * @param line line affected
      * @param col start column
-     * @param len lenght of change
+     * @param len length of change
      * @param text text removed/inserted
      */
     KateUndo (KateUndoGroup::UndoType type, uint line, uint col, uint len, const TQString &text);
diff --git a/kate/part/kateundo.h b/kate/part/kateundo.h
index 4d0141189..9beaf3695 100644
--- a/kate/part/kateundo.h
+++ b/kate/part/kateundo.h
@@ -76,7 +76,7 @@ class KateUndoGroup
      * @param type undo item type
      * @param line line affected
      * @param col start column
-     * @param len lenght of change
+     * @param len length of change
      * @param text text removed/inserted
      */
     void addItem (KateUndoGroup::UndoType type, uint line, uint col, uint len, const TQString &text);
diff --git a/kate/part/kateviewinternal.h b/kate/part/kateviewinternal.h
index 4dbc08bf8..94af8cc30 100644
--- a/kate/part/kateviewinternal.h
+++ b/kate/part/kateviewinternal.h
@@ -287,7 +287,7 @@ class KateViewInternal : public TQWidget
     //
     TQMemArray<KateLineRange> lineRanges;
 
-    // maximal lenght of textlines visible from given startLine
+    // maximal length of textlines visible from given startLine
     int maxLen(uint startLine);
 
     // are we allowed to scroll columns?
diff --git a/kate/tests/highlight.f90 b/kate/tests/highlight.f90
index e2008c20a..547c364b8 100644
--- a/kate/tests/highlight.f90
+++ b/kate/tests/highlight.f90
@@ -68,7 +68,7 @@ module module_example
   real(kind=kr), dimension(1:10, -4:5), private :: a, b, c
   real(kind=kr), private :: d(1:10, -4:5)
 
-  ! This is a string with fixed lenght
+  ! This is a string with fixed length
   character(len=10) :: str_var
 
   ! This is an allocatable array, which can be a target of a pointer
diff --git a/kio/kio/tcpslavebase.h b/kio/kio/tcpslavebase.h
index bbf2bb95f..fd148b00d 100644
--- a/kio/kio/tcpslavebase.h
+++ b/kio/kio/tcpslavebase.h
@@ -122,7 +122,7 @@ protected:
      * well as handling data over SOCKSified connections.
      *
      * @param data storage for the info read from server
-     * @param len lenght of the info to read from the server
+     * @param len length of the info to read from the server
      *
      * @return the actual size of data that was obtained
      */