diff -urN mtr-0.75/configure mtr-0.75.new/configure
--- mtr-0.75/configure	2008-09-19 11:38:58.000000000 +0200
+++ mtr-0.75.new/configure	2009-06-26 22:41:26.000000000 +0200
@@ -7956,7 +7956,7 @@
 echo $ECHO_N "checking for C flags to get more warnings... $ECHO_C" >&6; }
 ac_save_CFLAGS="$CFLAGS"
 if test "x$ac_cv_c_compiler_gnu" = "xyes" ; then
-    warning_CFLAGS="-Wall -Wno-pointer-sign"
+    warning_CFLAGS="-Wall"
 else
     case "$host_os" in
         irix*)
diff -urN mtr-0.75/configure.in mtr-0.75.new/configure.in
--- mtr-0.75/configure.in	2008-09-08 09:40:54.000000000 +0200
+++ mtr-0.75.new/configure.in	2009-06-26 22:41:21.000000000 +0200
@@ -108,7 +108,7 @@
 ac_save_CFLAGS="$CFLAGS"
 if test "x$ac_cv_c_compiler_gnu" = "xyes" ; then
   dnl gcc is the easiest C compiler
-  warning_CFLAGS="-Wall -Wno-pointer-sign"
+  warning_CFLAGS="-Wall"
 else
   dnl Vendor supplied C compilers are a bit tricky
   case "$host_os" in