diff --git a/src/ncp/ncp_spi.cpp b/src/ncp/ncp_spi.cpp
index 6b4a87a67..f585bd169 100644
--- a/src/ncp/ncp_spi.cpp
+++ b/src/ncp/ncp_spi.cpp
@@ -291,6 +291,8 @@ NcpSpi::OutboundFrameFeedMessage(Message &message)
         mSendFrameIter += frameLength;
     }
 
+    Message::Free(message);
+
     return errorCode;
 }