diff --git a/src/app/ClusterStateCache.h b/src/app/ClusterStateCache.h
index 9e08abacde7768..2a96a949193f4f 100644
--- a/src/app/ClusterStateCache.h
+++ b/src/app/ClusterStateCache.h
@@ -71,6 +71,14 @@ class ClusterStateCache : protected ReadClient::Callback
     class Callback : public ReadClient::Callback
     {
     public:
+        Callback() = default;
+
+        // Callbacks are not expected to be copyable or movable.
+        Callback(const Callback &) = delete;
+        Callback(Callback &&)      = delete;
+        Callback & operator=(const Callback &) = delete;
+        Callback & operator=(Callback &&) = delete;
+
         /*
          * Called anytime an attribute value has changed in the cache
          */
@@ -103,6 +111,11 @@ class ClusterStateCache : protected ReadClient::Callback
         mHighestReceivedEventNumber = highestReceivedEventNumber;
     }
 
+    ClusterStateCache(const ClusterStateCache &) = delete;
+    ClusterStateCache(ClusterStateCache &&)      = delete;
+    ClusterStateCache & operator=(const ClusterStateCache &) = delete;
+    ClusterStateCache & operator=(ClusterStateCache &&) = delete;
+
     void SetHighestReceivedEventNumber(EventNumber highestReceivedEventNumber)
     {
         mHighestReceivedEventNumber.SetValue(highestReceivedEventNumber);
diff --git a/src/app/ReadClient.cpp b/src/app/ReadClient.cpp
index c9df6638b708ef..caac866aeba08c 100644
--- a/src/app/ReadClient.cpp
+++ b/src/app/ReadClient.cpp
@@ -45,7 +45,6 @@ ReadClient::ReadClient(InteractionModelEngine * apImEngine, Messaging::ExchangeM
     mOnConnectionFailureCallback(HandleDeviceConnectionFailure, this)
 {
     mpExchangeMgr    = apExchangeMgr;
-    mpCallback       = apCallback;
     mInteractionType = aInteractionType;
 
     mpImEngine = apImEngine;
diff --git a/src/app/ReadClient.h b/src/app/ReadClient.h
index 71844713ff1461..85bcd124e5190f 100644
--- a/src/app/ReadClient.h
+++ b/src/app/ReadClient.h
@@ -72,6 +72,14 @@ class ReadClient : public Messaging::ExchangeDelegate
     class Callback
     {
     public:
+        Callback() = default;
+
+        // Callbacks are not expected to be copyable or movable.
+        Callback(const Callback &) = delete;
+        Callback(Callback &&)      = delete;
+        Callback & operator=(const Callback &) = delete;
+        Callback & operator=(Callback &&) = delete;
+
         virtual ~Callback() = default;
 
         /**