diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 72c91a8335..73eda6370c 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -8,6 +8,10 @@
    2002-12-01 23:12 UTC+0100 Foo Bar <foo.bar@foobar.org>
 */
 
+2002-07-08 17:20 UTC+0100 Martin Vogel <vogel@inttec.de>
+   * source/rtl/math.c
+     * #ifdef'ed matherr() definition to hide it from compilers not supporting it 
+	
 2002-07-08 10:15 UTC-0300 Luiz Rafael Culik <culikr@uol.com.br>
    * contrib/rdd_ads/ads1.c
       * Fixed bug on adsGetValue() function when numeric data to be putted are more the 10 number
diff --git a/harbour/source/rtl/math.c b/harbour/source/rtl/math.c
index b0134d96b4..a9074e3fd7 100644
--- a/harbour/source/rtl/math.c
+++ b/harbour/source/rtl/math.c
@@ -120,6 +120,7 @@ int hb_mathIsMathErr (void)
 }
 
 /* route C math lib errors to Harbour error handling */
+#if defined(HB_MATH_HANDLER)
 int matherr (struct exception * err)
 {
    int retval;
@@ -187,7 +188,7 @@ int matherr (struct exception * err)
    return (retval);  
 
 }
-
+#endif
 
 /*
  * ************************************************************