diff --git a/libs/pcg/include/psemek/pcg/lazy_perlin.hpp b/libs/pcg/include/psemek/pcg/lazy_perlin.hpp
index 39767702..c0f43f20 100644
--- a/libs/pcg/include/psemek/pcg/lazy_perlin.hpp
+++ b/libs/pcg/include/psemek/pcg/lazy_perlin.hpp
@@ -42,10 +42,10 @@ namespace psemek::pcg
 				values[mask] = geom::dot(grid_at(ii), tt);
 			}
 
-			auto smootherstep = [](float x0, float x1, float t)
+			auto smootherstep = [](T x0, T x1, T t)
 			{
-				auto const s = t * t * t * (10. + t * (-15. + 6. * t));
-				return x0 * (1 - s) + x1 * s;
+				auto const s = t * t * t * (T(10) + t * (-T(15) + T(6) * t));
+				return x0 * (T(1) - s) + x1 * s;
 			};
 
 			for (std::size_t i = N; i --> 0;)