diff --git a/rtems/config/rtems-gcc-4.4.7-newlib-1.18.0-1.cfg b/rtems/config/rtems-gcc-4.4.7-newlib-1.18.0-1.cfg
index eb399d3..aeb2a20 100644
--- a/rtems/config/rtems-gcc-4.4.7-newlib-1.18.0-1.cfg
+++ b/rtems/config/rtems-gcc-4.4.7-newlib-1.18.0-1.cfg
@@ -15,6 +15,14 @@
 %define with_plugin  0
 %define with_iconv   1
 
+#
+# AVR C++ does not work.
+#   configure: error: unable to detect exception model
+#
+%if %{target} == avr-rtems4.10
+%define enable_cxx 0
+%endif
+
 #
 # The RTEMS 4.10 patches
 #