diff --git a/src/main/resources/calc/calc-config-defaults.json b/src/main/resources/calc/calc-config-defaults.json
index fe907c32fa70a35e8225035f2f11d86ed8edc3a3..7e3ace29cc17d1a6ac8c8412cef328fc62ab5e67 100644
--- a/src/main/resources/calc/calc-config-defaults.json
+++ b/src/main/resources/calc/calc-config-defaults.json
@@ -58,7 +58,7 @@
       "TOTAL",
       "MAP"
     ],
-    "returnPeriods": [475, 975, 2475]
+    "returnPeriods": [475, 975, 2475, 10000]
   },
   "performance": {
     "optimizeGrids": true,