diff --git a/user_channel/cipher_mgmt.cpp b/user_channel/cipher_mgmt.cpp
index c0c0ae1..01518c6 100644
--- a/user_channel/cipher_mgmt.cpp
+++ b/user_channel/cipher_mgmt.cpp
@@ -133,7 +133,7 @@
                    "FILE_NAME", tmpFile);
         return -EIO;
     }
-    const auto& writeData = jsonData.dump();
+    const auto& writeData = jsonData.dump(4);
     if (write(fd, writeData.c_str(), writeData.size()) !=
         static_cast<ssize_t>(writeData.size()))
     {