diff --git a/xpcPlugin/Log.cpp b/xpcPlugin/Log.cpp
index 411cdb4..7b849dd 100644
--- a/xpcPlugin/Log.cpp
+++ b/xpcPlugin/Log.cpp
@@ -57,7 +57,7 @@ namespace XPC
 
 	static void WriteLevel(FILE* fd, int level)
 	{
-		char* str;
+		const char* str;
 		switch (level)
 		{
 		case LOG_OFF: