diff --git a/aclocal.m4 b/aclocal.m4
index 668f764..52dc09e 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1674,7 +1674,7 @@ fi
 
 if test -z "$1"; then
 
-kde_incdirs="/usr/lib/kde/include /usr/local/kde/include /usr/local/include /usr/kde/include /usr/include/kde /usr/include /opt/kde3/include /opt/kde/include $x_includes $qt_includes"
+kde_incdirs="/opt/kde3/include/kde /usr/lib/kde/include /usr/local/kde/include /usr/local/include /usr/kde/include /usr/include/kde /usr/include /opt/kde3/include /opt/kde/include $x_includes $qt_includes"
 test -n "$KDEDIR" && kde_incdirs="$KDEDIR/include $KDEDIR/include/kde $KDEDIR $kde_incdirs"
 kde_incdirs="$ac_kde_includes $kde_incdirs"
 AC_FIND_FILE($kde_check_header, $kde_incdirs, kde_incdir)