diff --git a/clean.sh b/clean-container.sh
similarity index 53%
rename from clean.sh
rename to clean-container.sh
index cbfb2f7..379ab97 100755
--- a/clean.sh
+++ b/clean-container.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
 docker-compose down -v
-rm -rf build
 sudo rm -rf data
-rm -rf generated
\ No newline at end of file
+source .env
+docker-compose up --force-recreate
\ No newline at end of file
diff --git a/src/utils/common.ts b/src/utils/common.ts
index 89a8413..f771613 100644
--- a/src/utils/common.ts
+++ b/src/utils/common.ts
@@ -38,5 +38,9 @@ export function collateralizationAtLup(debt: BigDecimal, collateral: BigDecimal,
 }
 
 export function thresholdPrice(debt: BigDecimal, collateral: BigDecimal): BigDecimal {
-    return debt.div(collateral)
+    if (collateral > ZERO_BD) {
+      return debt.div(collateral)
+    } else {
+      return ZERO_BD;
+    }
 }
diff --git a/subgraph.yaml b/subgraph.yaml
index e7d10c8..a836eb9 100644
--- a/subgraph.yaml
+++ b/subgraph.yaml
@@ -135,6 +135,7 @@ dataSources:
     source:
       address: "0xaeB91e664A49829FaBf06BE35d4447938d83A271"
       abi: GrantFund
+      startBlock: 8613513
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.7