diff --git a/src/claude_code_sdk/_internal/transport/subprocess_cli.py b/src/claude_code_sdk/_internal/transport/subprocess_cli.py
index 982a85a..288b2e7 100644
--- a/src/claude_code_sdk/_internal/transport/subprocess_cli.py
+++ b/src/claude_code_sdk/_internal/transport/subprocess_cli.py
@@ -199,6 +199,7 @@ class SubprocessCLITransport(Transport):
                         if not json_line:
                             continue
 
+                        # Keep accumulating partial JSON until we can parse it
                         json_buffer += json_line
 
                         if len(json_buffer) > _MAX_BUFFER_SIZE: