diff --git a/libs/gfx/include/psemek/gfx/gltf_animation.hpp b/libs/gfx/include/psemek/gfx/gltf_animation.hpp
index 7f061eb8..a50826e1 100644
--- a/libs/gfx/include/psemek/gfx/gltf_animation.hpp
+++ b/libs/gfx/include/psemek/gfx/gltf_animation.hpp
@@ -129,7 +129,8 @@ namespace psemek::gfx
 
 			auto i = it - input_.begin();
 
-			float t = (time - input_[i - 1]) / (input_[i] - input_[i - 1]);
+			float td = (input_[i] - input_[i - 1]);
+			float t = (time - input_[i - 1]) / td;
 
 			switch (interpolation_)
 			{
@@ -144,9 +145,9 @@ namespace psemek::gfx
 					float t3 = t * t2;
 					return traits::normalize(output_type::zero()
 						+ output_[3 * (i - 1) + 1] * (  2.f * t3 - 3.f * t2 + 1.f)
-						+ output_[3 * (i - 1) + 2] * (        t3 - 2.f * t2 + t  )
+						+ output_[3 * (i - 1) + 2] * (        t3 - 2.f * t2 + t  ) * td
 						+ output_[3 * (i + 0) + 1] * (- 2.f * t3 + 3.f * t2      )
-						+ output_[3 * (i + 0) + 0] * (        t3 -       t2      )
+						+ output_[3 * (i + 0) + 0] * (        t3 -       t2      ) * td
 						);
 				}
 			default: