diff --git a/src/main.cc b/src/main.cc
index ce206d0e..1c3ad81f 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -139,9 +139,11 @@ void get_block_id(const Nan::FunctionCallbackInfo<v8::Value>& info) {
     blobdata input = std::string(Buffer::Data(target), Buffer::Length(target));
     blobdata output = "";
 
+    int errorCode = 0;
+    
     block b = AUTO_VAL_INIT(b);
-    if (!parse_and_validate_block_from_blob(input, b, b.major_version >= mergedMiningBlockVersion))
-        return THROW_ERROR_EXCEPTION("Failed to parse block");
+    if (!parse_and_validate_block_from_blob(input, b, b.major_version >= mergedMiningBlockVersion, &errorCode))
+        return THROW_ERROR_EXCEPTION("Failed to parse block" + std::to_string(errorCode));
 
     crypto::hash block_id;
     if (!get_block_hash(b, block_id, mergedMiningBlockVersion))
@@ -178,9 +180,11 @@ void construct_block_blob(const Nan::FunctionCallbackInfo<v8::Value>& info) {
     blobdata block_template_blob = std::string(Buffer::Data(block_template_buf), Buffer::Length(block_template_buf));
     blobdata output = "";
 
+    int errorCode = 0;
+    
     block b = AUTO_VAL_INIT(b);
-    if (!parse_and_validate_block_from_blob(block_template_blob, b, b.major_version >= mergedMiningBlockVersion))
-        return THROW_ERROR_EXCEPTION("Failed to parse block");
+    if (!parse_and_validate_block_from_blob(block_template_blob, b, b.major_version >= mergedMiningBlockVersion, &errorCode))
+        return THROW_ERROR_EXCEPTION("Failed to parse block" + std::to_string(errorCode));
 
     b.nonce = nonce;
     if (b.major_version == mergedMiningBlockVersion) {