diff --git a/glm/detail/func_geometric.inl b/glm/detail/func_geometric.inl
index 3da09f63..1d51df91 100644
--- a/glm/detail/func_geometric.inl
+++ b/glm/detail/func_geometric.inl
@@ -186,6 +186,6 @@ namespace detail
 
 		T const dotValue(dot(N, I));
 		T const k(static_cast<T>(1) - eta * eta * (static_cast<T>(1) - dotValue * dotValue));
-		return (eta * I - (eta * dotValue + std::sqrt(k)) * N) * static_cast<genType>(k >= static_cast<genType>(0));
+		return (eta * I - (eta * dotValue + std::sqrt(k)) * N) * static_cast<T>(k >= static_cast<T>(0));
 	}
 }//namespace glm