diff --git a/src/app/ReadHandler.cpp b/src/app/ReadHandler.cpp
index 87dfe111709141..487acd27ed883e 100644
--- a/src/app/ReadHandler.cpp
+++ b/src/app/ReadHandler.cpp
@@ -921,14 +921,12 @@ void ReadHandler::ClearStateFlag(ReadHandlerFlags aFlag)
 
 size_t ReadHandler::GetReportBufferMaxSize()
 {
-    size_t maxBufSize                  = kMaxSecureSduLengthBytes;
     Transport::SecureSession * session = GetSession();
     if (session && session->AllowsLargePayload())
     {
-        maxBufSize = kMaxLargeSecureSduLengthBytes;
+        return kMaxLargeSecureSduLengthBytes;
     }
-
-    return maxBufSize;
+    return kMaxSecureSduLengthBytes;
 }
 
 } // namespace app