diff --git a/rtems/config/4.11/rtems-h8300.bset b/rtems/config/4.11/rtems-h8300.bset
index 569bb75..6e28f0b 100644
--- a/rtems/config/4.11/rtems-h8300.bset
+++ b/rtems/config/4.11/rtems-h8300.bset
@@ -16,6 +16,13 @@
 #
 %define with_iconv 0
 
+#
+# Simulator does not build on Windows.
+#
+%if %{_host_os} == win32
+ %define gdb-disable-sim 1
+%endif
+
 #
 # Tools configuration.
 #