--- a/mail/config/mozconfigs/common
+++ b/mail/config/mozconfigs/common
@@ -6,9 +6,12 @@ fi
 ac_add_options --enable-calendar
 
 if [ "$MOZ_IS_COMM_TOPDIR" = "1" ]; then
   mk_add_options CLIENT_PY_ARGS="$([ -f "$topsrcdir/build/client.py-args" ] && cat "$topsrcdir/build/client.py-args")"
   mk_add_options ALWAYS_RUN_CLIENT_PY=1
 
   # https://bugzilla.mozilla.org/show_bug.cgi?id=1424334
   export SOCORRO_SYMBOL_UPLOAD_URL='https://crash-stats.mozilla.com/symbols/upload'
+  if [ "x$IS_NIGHTLY" = "xyes" ]; then
+    MOZ_AUTOMATION_UPLOAD_SYMBOLS=${MOZ_AUTOMATION_UPLOAD_SYMBOLS-1}
+  fi
 fi