diff --git a/package-lock.json b/package-lock.json
index 039f4978..bb466cce 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@daostack/subgraph",
-  "version": "0.0.36-4",
+  "version": "0.0.36-5",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index a0462c74..86e70d62 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@daostack/subgraph",
-  "version": "0.0.36-4",
+  "version": "0.0.36-5",
   "author": "DAOstack (https://www.daostack.io)",
   "license": "GPL-3.0",
   "description": "A caching layer for daostack using The Graph",
diff --git a/src/mappings/Controller/mapping.ts b/src/mappings/Controller/mapping.ts
index e823113b..be969431 100644
--- a/src/mappings/Controller/mapping.ts
+++ b/src/mappings/Controller/mapping.ts
@@ -315,7 +315,7 @@ export function setContributionRewardExtParams(avatar: Address,
                                                rewarder: Address): void {
     setGPParams(vmAddress, vmParamsHash);
     let controllerScheme =  ControllerScheme.load(crypto.keccak256(concat(avatar, scheme)).toHex());
-    let contributionRewardExtParams = new ContributionRewardExtParam(controllerScheme.paramsHash.toHex());
+    let contributionRewardExtParams = new ContributionRewardExtParam(scheme.toHex());
     contributionRewardExtParams.votingMachine = vmAddress;
     contributionRewardExtParams.voteParams = vmParamsHash.toHex();
     contributionRewardExtParams.rewarder = rewarder;