diff --git a/src/logic/evolution.js b/src/logic/evolution.js
index 36d4dbc..a53887c 100644
--- a/src/logic/evolution.js
+++ b/src/logic/evolution.js
@@ -103,11 +103,12 @@ class Evolution extends Arrangement {
 				amount -= this.productsAmount[this.productIndex];
 			}
 			const [x, y] = i2gc(this.productIndex++);
-			return {
-				product: Knowledge.semanticNetwork.findProductByName(this.population[this.populationIndex].products[this.productIndex]),
+			const product = Knowledge.semanticNetwork.findProductByName(this.population[this.populationIndex].products[this.productIndex]);
+			return product && {
+				product,
 				amount,
 				x, y
-			}
+			};
 		}
   }