diff --git a/test_output.bin b/new_testFile_large.zip
similarity index 100%
rename from test_output.bin
rename to new_testFile_large.zip
diff --git a/src/NATSBridge.jl b/src/NATSBridge.jl
index f100aa1..3af2ce1 100644
--- a/src/NATSBridge.jl
+++ b/src/NATSBridge.jl
@@ -6,7 +6,7 @@
 
 module NATSBridge
 
-using NATS, JSON, Arrow, HTTP, UUIDs, Dates
+using NATS, JSON, Arrow, HTTP, UUIDs, Dates, Base64
 # ---------------------------------------------- 100 --------------------------------------------- #
 
 # Constants
@@ -155,7 +155,7 @@ env = smartsend("large.data", data, "arrow")
 # In another process, retrieve and deserialize:
 # msg = subscribe(nats_url, "my.subject")
 # env = json_to_envelope(msg.data)
-# data = _deserialize_data(base64decode(env.payload), env.type)
+# data = _deserialize_data(Base64.decode(env.payload), env.type)
 ```
 """
 function smartsend(
@@ -183,7 +183,7 @@ function smartsend(
   # Decision: Direct vs Link
   if payload_size < size_threshold  # Check if payload is small enough for direct transport
       # Direct path - Base64 encode and send via NATS
-      payload_b64 = base64encode(payload_bytes)  # Encode bytes as base64 string
+      payload_b64 = Base64.encode(payload_bytes)  # Encode bytes as base64 string
       log_trace(cid, "Using direct transport for $payload_size bytes")  # Log transport choice
       
       env = MessageEnvelope(  # Create envelope for direct transport
@@ -354,7 +354,7 @@ function smartreceive(
         log_trace(env.correlation_id, "Direct transport - decoding payload")  # Log direct transport handling
         
         # Decode Base64 payload
-        payload_bytes = base64decode(env.payload)  # Decode base64 payload to bytes
+        payload_bytes = Base64.decode(env.payload)  # Decode base64 payload to bytes
         
         # Deserialize based on type
         data = _deserialize_data(payload_bytes, env.type, env.correlation_id, env.metadata)  # Convert bytes to Julia data
@@ -456,19 +456,19 @@ function _deserialize_data(
 end
 
 
-""" Decode base64 string to bytes
-This internal function decodes a base64-encoded string back to binary data.
-It's a wrapper around Base64.decode for consistency in the module.
+# """ Decode base64 string to bytes
+# This internal function decodes a base64-encoded string back to binary data.
+# It's a wrapper around Base64.decode for consistency in the module.
 
-Arguments:
-  - `str::String` - Base64-encoded string to decode
+# Arguments:
+#   - `str::String` - Base64-encoded string to decode
 
-Return:
-  - Vector{UInt8} - Decoded binary data
-"""
-function base64decode(str::String)
-    return Base64.decode(str)  # Decode base64 string to bytes using Julia's Base64 module
-end
+# Return:
+#   - Vector{UInt8} - Decoded binary data
+# """
+# function base64decode(str::String)
+#     return Base64.decode(str)  # Decode base64 string to bytes using Julia's Base64 module
+# end
 
 
 """ plik_oneshot_upload - Upload a single file to a plik server using one-shot mode
diff --git a/test/test_large_payload.jl b/test/test_large_payload.jl
index 30a395f..0d10554 100644
--- a/test/test_large_payload.jl
+++ b/test/test_large_payload.jl
@@ -85,7 +85,8 @@ function test_large_binary_receive()
         log_trace("Received $(file_size) bytes of binary data")
         
         # Save received data to a test file
-        output_path = "test_output.bin"
+        filename = basename(result.envelope.url)
+        output_path = "./new_$filename"
         write(output_path, result.data)
         log_trace("Saved received data to $output_path")