diff --git a/backend/src/api/transaction-utils.ts b/backend/src/api/transaction-utils.ts
index 6ff1c10b7..9107f2ae7 100644
--- a/backend/src/api/transaction-utils.ts
+++ b/backend/src/api/transaction-utils.ts
@@ -145,6 +145,10 @@ class TransactionUtils {
   }
 
   public countScriptSigops(script: string, isRawScript: boolean = false, witness: boolean = false): number {
+    if (!script?.length) {
+      return 0;
+    }
+
     let sigops = 0;
     // count OP_CHECKSIG and OP_CHECKSIGVERIFY
     sigops += (script.match(/OP_CHECKSIG/g)?.length || 0);