diff --git a/app/api/coreApi.js b/app/api/coreApi.js
index be1203d..8436a6e 100644
--- a/app/api/coreApi.js
+++ b/app/api/coreApi.js
@@ -157,7 +157,7 @@ function shouldCacheTransaction(tx) {
 		return false;
 	}
 
-	if (tx.vin.length > 9) {
+	if (tx.vin != null && tx.vin.length > 9) {
 		return false;
 	}