diff --git a/src/otoole/preprocess/config.yaml b/src/otoole/preprocess/config.yaml
index 46b7bac..ba1b9db 100644
--- a/src/otoole/preprocess/config.yaml
+++ b/src/otoole/preprocess/config.yaml
@@ -348,6 +348,7 @@ Demand:
     dtype: float
     default: 0
 DiscountedCapitalInvestmentStorage:
+    short_name: DiscountedCapitalInvestStorage
     indices: [REGION, STORAGE, YEAR]
     type: result
     dtype: float