diff --git a/CHANGELOG.md b/CHANGELOG.md
index de60d4a97b..b534745461 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,7 +38,7 @@
 - [11665](https://github.com/vegaprotocol/vega/issues/11665) - Delay the final termination of a transfer to the following epoch. 
 - [11679](https://github.com/vegaprotocol/vega/issues/11679) - Fix calculation of fees in party `stats`. 
 - [11665](https://github.com/vegaprotocol/vega/issues/11665) - Delay the final termination of a transfer to the following epoch.
-
+- [11687](https://github.com/vegaprotocol/vega/issues/11687) - Fix potential division by zero in notional reward metric evaluation. 
 ## 0.78.1
 
 ### 🐛 Fixes
diff --git a/core/execution/common/market_activity_tracker.go b/core/execution/common/market_activity_tracker.go
index 144f40bd6f..0e9d1ea879 100644
--- a/core/execution/common/market_activity_tracker.go
+++ b/core/execution/common/market_activity_tracker.go
@@ -1393,7 +1393,7 @@ func calcNotionalAt(n *twNotional, t, tn int64, markPrice *num.Uint) *num.Uint {
 	}
 	p1 := num.UintZero().Mul(n.currentEpochTWNotional, tnOverTComp)
 	var notional *num.Uint
-	if markPrice != nil && !markPrice.IsZero() {
+	if markPrice != nil && !markPrice.IsZero() && !(n.price.IsZero() || n.notional.IsZero()) {
 		notional, _ = num.UintFromDecimal(n.notional.ToDecimal().Div(n.price.ToDecimal()).Mul(markPrice.ToDecimal()))
 	} else {
 		notional = n.notional