diff --git a/src/libs/actions/Policy/Policy.ts b/src/libs/actions/Policy/Policy.ts
index 35272f6c231c..040a54882a46 100644
--- a/src/libs/actions/Policy/Policy.ts
+++ b/src/libs/actions/Policy/Policy.ts
@@ -1308,6 +1308,7 @@ function updateGeneralSettings(policyID: string | undefined, name: string, curre
                 outputCurrency: currency,
                 ...(customUnitID && {
                     customUnits: {
+                        ...policy.customUnits,
                         [customUnitID]: {
                             ...distanceUnit,
                             rates: optimisticRates,