diff --git a/tdecore/kdemacros.h.cmake b/tdecore/kdemacros.h.cmake
index 99886334a..4db1fd5db 100644
--- a/tdecore/kdemacros.h.cmake
+++ b/tdecore/kdemacros.h.cmake
@@ -133,39 +133,6 @@
  #endif
 #endif
 
-/**
- * The KDE_ISLIKELY macro tags a boolean expression as likely to evaluate to
- * 'true'. When used in an if ( ) statement, it gives a hint to the compiler
- * that the following codeblock is likely to get executed. Providing this
- * information helps the compiler to optimize the code for better performance.
- * Using the macro has an insignificant code size or runtime memory footprint impact.
- * The code semantics is not affected.
- *
- * \note
- * Providing wrong information ( like marking a condition that almost never
- * passes as 'likely' ) will cause a significant runtime slowdown. Therefore only
- * use it for cases where you can be sure about the odds of the expression to pass
- * in all cases ( independent from e.g. user configuration ).
- *
- * \par
- * The KDE_ISUNLIKELY macro tags an expression as unlikely evaluating to 'true'. 
- *
- * \note
- * Do NOT use ( !KDE_ISLIKELY(foo) ) as an replacement for KDE_ISUNLIKELY !
- *
- * \code
- * if ( KDE_ISUNLIKELY( testsomething() ) )
- *     abort();     // assume its unlikely that the application aborts
- * \endcode
- */
-#if __GNUC__ - 0 >= 3
-# define KDE_ISLIKELY( x )    __builtin_expect(!!(x),1)
-# define KDE_ISUNLIKELY( x )  __builtin_expect(!!(x),0)
-#else
-# define KDE_ISLIKELY( x )   ( x )
-# define KDE_ISUNLIKELY( x )  ( x )
-#endif
-
 /**
  * This macro, and it's friends going up to 10 reserve a fixed number of virtual
  * functions in a class.  Because adding virtual functions to a class changes the
diff --git a/tdecore/kdemacros.h.in b/tdecore/kdemacros.h.in
index a0d70a2fc..b572ca212 100644
--- a/tdecore/kdemacros.h.in
+++ b/tdecore/kdemacros.h.in
@@ -132,39 +132,6 @@
  #endif
 #endif
 
-/**
- * The KDE_ISLIKELY macro tags a boolean expression as likely to evaluate to
- * 'true'. When used in an if ( ) statement, it gives a hint to the compiler
- * that the following codeblock is likely to get executed. Providing this
- * information helps the compiler to optimize the code for better performance.
- * Using the macro has an insignificant code size or runtime memory footprint impact.
- * The code semantics is not affected.
- *
- * \note
- * Providing wrong information ( like marking a condition that almost never
- * passes as 'likely' ) will cause a significant runtime slowdown. Therefore only
- * use it for cases where you can be sure about the odds of the expression to pass
- * in all cases ( independent from e.g. user configuration ).
- *
- * \par
- * The KDE_ISUNLIKELY macro tags an expression as unlikely evaluating to 'true'. 
- *
- * \note
- * Do NOT use ( !KDE_ISLIKELY(foo) ) as an replacement for KDE_ISUNLIKELY !
- *
- * \code
- * if ( KDE_ISUNLIKELY( testsomething() ) )
- *     abort();     // assume its unlikely that the application aborts
- * \endcode
- */
-#if __GNUC__ - 0 >= 3
-# define KDE_ISLIKELY( x )    __builtin_expect(!!(x),1)
-# define KDE_ISUNLIKELY( x )  __builtin_expect(!!(x),0)
-#else
-# define KDE_ISLIKELY( x )   ( x )
-# define KDE_ISUNLIKELY( x )  ( x )
-#endif
-
 /**
  * This macro, and it's friends going up to 10 reserve a fixed number of virtual
  * functions in a class.  Because adding virtual functions to a class changes the