diff --git a/PancakeLogger.h b/PancakeLogger.h
index a48b977..6ed80ff 100644
--- a/PancakeLogger.h
+++ b/PancakeLogger.h
@@ -11,7 +11,7 @@ PANCAKE_API void PancakeLoggerFormat(UByte type, UByte flags, UByte *format, ...
 #define PANCAKE_LOGGER_REQUEST 	1 << 1
 #define PANCAKE_LOGGER_ERROR	1 << 2
 
-#define PANCAKE_LOGGER_TYPE_MASK	PANCAKE_LOGGER_SYSTEM | PANCAKE_LOGGER_REQUEST | PANCAKE_LOGGER_ERROR
+#define PANCAKE_LOGGER_TYPE_MASK	(PANCAKE_LOGGER_SYSTEM | PANCAKE_LOGGER_REQUEST | PANCAKE_LOGGER_ERROR)
 
 #define PANCAKE_LOGGER_FLAG_WRITE	1 << 0