diff --git a/build_release b/build_release
index aecff9347..b5050a55f 100755
--- a/build_release
+++ b/build_release
@@ -75,6 +75,7 @@ LIBS_w += -L$WINLOCAL/lib
 LIBS_p += -L$WINLOCAL/lib
 
 CONFIG_EAP_SIM=y
+CONFIG_SIM_SIMULATOR=y
 CONFIG_EAP_AKA=y
 CONFIG_USIM_SIMULATOR=y
 CONFIG_EAP_LEAP=y