diff --git a/src/main.cc b/src/main.cc
index 4a14232f..8918d214 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -87,8 +87,8 @@ NAN_METHOD(convert_blob) {
 
     Local<Object> target = info[0]->ToObject();
     uint64_t mergedMiningBlockVersion = BLOCK_MAJOR_VERSION_2;
-    if (args.Length() >= 2) {
-      mergedMiningBlockVersion = static_cast<uint64_t>(args[1]->ToNumber()->NumberValue());
+    if (info.Length() >= 2) {
+      mergedMiningBlockVersion = static_cast<uint64_t>(info[1]->ToNumber()->NumberValue());
     }
 
     if (!Buffer::HasInstance(target))
@@ -127,8 +127,8 @@ void get_block_id(const Nan::FunctionCallbackInfo<v8::Value>& info) {
 
     Local<Object> target = info[0]->ToObject();
     uint64_t mergedMiningBlockVersion = BLOCK_MAJOR_VERSION_2;
-    if (args.Length() >= 2) {
-      mergedMiningBlockVersion = static_cast<uint64_t>(args[1]->ToNumber()->NumberValue());
+    if (info.Length() >= 2) {
+      mergedMiningBlockVersion = static_cast<uint64_t>(info[1]->ToNumber()->NumberValue());
     }
 
     if (!Buffer::HasInstance(target))
@@ -161,8 +161,8 @@ void construct_block_blob(const Nan::FunctionCallbackInfo<v8::Value>& info) {
     Local<Object> nonce_buf = info[1]->ToObject();
 
     uint64_t mergedMiningBlockVersion = BLOCK_MAJOR_VERSION_2;
-    if (args.Length() >= 3) {
-      mergedMiningBlockVersion = static_cast<uint64_t>(args[2]->ToNumber()->NumberValue());
+    if (info.Length() >= 3) {
+      mergedMiningBlockVersion = static_cast<uint64_t>(info[2]->ToNumber()->NumberValue());
     }
 
     if (!Buffer::HasInstance(block_template_buf) || !Buffer::HasInstance(nonce_buf))