diff --git a/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h b/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h
index 138d700..35162a6 100644
--- a/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h
+++ b/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h
@@ -93,17 +93,18 @@
     }
 
    protected:
-    void beginCommand_2_2(IComposerClient::Command command, uint16_t length) {
-        V2_1::CommandWriterBase::beginCommand(
-            static_cast<V2_1::IComposerClient::Command>(static_cast<int32_t>(command)), length);
-    }
-
     void writeFloatColor(const IComposerClient::FloatColor& color) {
         writeFloat(color.r);
         writeFloat(color.g);
         writeFloat(color.b);
         writeFloat(color.a);
     }
+
+  private:
+    void beginCommand_2_2(IComposerClient::Command command, uint16_t length) {
+        V2_1::CommandWriterBase::beginCommand(
+                static_cast<V2_1::IComposerClient::Command>(static_cast<int32_t>(command)), length);
+    }
 };
 
 // This class helps parse a command queue.  Note that all sizes/lengths are in
diff --git a/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h b/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h
index 11863fa..162915e 100644
--- a/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h
+++ b/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h
@@ -119,17 +119,18 @@
     }
 
    protected:
-    void beginCommand_2_3(IComposerClient::Command command, uint16_t length) {
-        V2_2::CommandWriterBase::beginCommand_2_2(
-            static_cast<V2_2::IComposerClient::Command>(static_cast<int32_t>(command)), length);
-    }
-
     void writeBlob(uint32_t length, const unsigned char* blob) {
         memcpy(&mData[mDataWritten], blob, length);
         uint32_t numElements = length / 4;
         mDataWritten += numElements;
         mDataWritten += (length - (numElements * 4) > 0) ? 1 : 0;
     }
+
+  private:
+    void beginCommand_2_3(IComposerClient::Command command, uint16_t length) {
+        V2_1::CommandWriterBase::beginCommand(
+                static_cast<V2_1::IComposerClient::Command>(static_cast<int32_t>(command)), length);
+    }
 };
 
 // This class helps parse a command queue.  Note that all sizes/lengths are in