diff --git a/include/internal/catch_decomposer.h b/include/internal/catch_decomposer.h
index 443ef2de..a6c02218 100644
--- a/include/internal/catch_decomposer.h
+++ b/include/internal/catch_decomposer.h
@@ -131,7 +131,7 @@ namespace Catch {
 
     public:
         explicit UnaryExpr( LhsT lhs )
-        :   ITransientExpression{ false, lhs ? true : false },
+        :   ITransientExpression{ false, static_cast<bool>(lhs) },
             m_lhs( lhs )
         {}
     };