diff --git a/src/app/WriteClient.h b/src/app/WriteClient.h
index 5be883e501bd04..e81e09d422643d 100644
--- a/src/app/WriteClient.h
+++ b/src/app/WriteClient.h
@@ -115,11 +115,6 @@ class WriteClient : public Messaging::ExchangeDelegate
     CHIP_ERROR FinishAttribute();
     TLV::TLVWriter * GetAttributeDataIBTLVWriter();
 
-    NodeId GetSourceNodeId() const
-    {
-        return mpExchangeCtx != nullptr ? mpExchangeCtx->GetSessionHandle()->AsSecureSession()->GetPeerNodeId() : kUndefinedNodeId;
-    }
-
 private:
     friend class TestWriteInteraction;
     friend class InteractionModelEngine;