diff --git a/src/lib/ipc/IpcClientProxy.cpp b/src/lib/ipc/IpcClientProxy.cpp
index 8c912a83..5ede6a05 100644
--- a/src/lib/ipc/IpcClientProxy.cpp
+++ b/src/lib/ipc/IpcClientProxy.cpp
@@ -146,7 +146,7 @@ IpcClientProxy::send(const IpcMessage& message)
 	switch (message.type()) {
 	case kIpcLogLine: {
 		const IpcLogLineMessage& llm = static_cast<const IpcLogLineMessage&>(message);
-		String logLine = llm.logLine();
+		const String logLine = llm.logLine();
 		ProtocolUtil::writef(&m_stream, kIpcMsgLogLine, &logLine);
 		break;
 	}
diff --git a/src/lib/ipc/IpcServerProxy.cpp b/src/lib/ipc/IpcServerProxy.cpp
index 90e87478..39379f52 100644
--- a/src/lib/ipc/IpcServerProxy.cpp
+++ b/src/lib/ipc/IpcServerProxy.cpp
@@ -94,7 +94,7 @@ IpcServerProxy::send(const IpcMessage& message)
 
 	case kIpcCommand: {
 		const IpcCommandMessage& cm = static_cast<const IpcCommandMessage&>(message);
-		String command = cm.command();
+		const String command = cm.command();
 		ProtocolUtil::writef(&m_stream, kIpcMsgCommand, &command);
 		break;
 	}