diff --git a/momentum/io/gltf/gltf_builder.cpp b/momentum/io/gltf/gltf_builder.cpp
index 227254e9..423a518e 100644
--- a/momentum/io/gltf/gltf_builder.cpp
+++ b/momentum/io/gltf/gltf_builder.cpp
@@ -488,7 +488,8 @@ void addSkeletonStatesToModel(
 
       auto localR = skeletonStates[i].jointState[j].localRotation().cast<float>();
       rotation[j][i] = {localR.x(), localR.y(), localR.z(), localR.w()};
-      if (!(localR.coeffs() - character.skeleton.joints[j].preRotation.coeffs()).isZero(1e-5f)) {
+      if (!(localR.toRotationMatrix() - character.skeleton.joints[j].preRotation.toRotationMatrix())
+               .isZero(1e-5f)) {
         useChannel[j][1] = true;
         foundAnyChannel = true;
       }