diff --git a/src/Exception.hpp b/src/Exception.hpp
index 1ca025c..b36f04b 100644
--- a/src/Exception.hpp
+++ b/src/Exception.hpp
@@ -152,7 +152,7 @@ static constexpr const char* file_name(const char* path) {
 
 #define THROW(message)                                                                                                 \
     std::stringstream ___ss;                                                                                           \
-    ___ss << "[" << file_name(__FILE__) << ":" << __LINE__ << "] " << (message);                                       \
+    ___ss << "[" << file_name(__FILE__) << ":" << __LINE__ << "] " << message;                                         \
     throw ArbUt::Exception(___ss.str());
 
 #define NOT_REACHABLE THROW("Not reachable");