diff --git a/src/one-body-sample.cc b/src/one-body-sample.cc
index e3a1969065deba273eca5035f3b776c8fa7e83d1..15d301843849386426b03f475bd91b658e5465e0 100644
--- a/src/one-body-sample.cc
+++ b/src/one-body-sample.cc
@@ -283,6 +283,7 @@ int main(int argc, char *argv[]) {
               false); // absolute error
           overallSolver.solve();
 
+          // Update the state
           for (size_t i = 0; i < frictionalNodes.size(); ++i) {
             if (frictionalNodes[i][0]) {
               double const unorm = u_diff[i].two_norm();