diff --git a/Capabilities.h b/Capabilities.h
index 6b29093..92ffcb3 100644
--- a/Capabilities.h
+++ b/Capabilities.h
@@ -78,6 +78,7 @@ namespace Alepha::Hydrogen
 		has_cap_in_capability_base( const Left &, Meta::type_value< Cap > cap )
 		{
 			throw "Unevaluated";
+			return false;
 		}
 
 		template< typename Cap, typename ... TParams >