diff --git a/lib/services/transaction.js b/lib/services/transaction.js
index a955f4ed..587299cc 100644
--- a/lib/services/transaction.js
+++ b/lib/services/transaction.js
@@ -120,7 +120,7 @@ TransactionService.prototype._confirmOutput = function(ops, block, transaction)
       value: output.toJSON()
     });
     var script = output.script;
-    if (!script.isPublicKeyHashOut() && !script.isScriptHashOut()) {
+    if (!script || !(script.isPublicKeyHashOut() || script.isScriptHashOut())) {
       return;
     }
     var address = output.script.toAddress();
@@ -149,7 +149,7 @@ TransactionService.prototype._confirmInput = function(ops, block, transaction) {
       }))
     });
     var script = input.script;
-    if (!(script.isPublicKeyHashIn() || script.isScriptHashIn())) {
+    if (!script || !(script.isPublicKeyHashIn() || script.isScriptHashIn())) {
       return Promise.resolve();
     }