diff --git a/mediapipe/calculators/util/landmarks_refinement_calculator.cc b/mediapipe/calculators/util/landmarks_refinement_calculator.cc
index 8f734ac88..2286ef583 100644
--- a/mediapipe/calculators/util/landmarks_refinement_calculator.cc
+++ b/mediapipe/calculators/util/landmarks_refinement_calculator.cc
@@ -160,7 +160,7 @@ class LandmarksRefinementCalculatorImpl
       refined_landmarks->add_landmark();
     }
 
-    // Apply input landmarks to outpu refined landmarks in provided order.
+    // Apply input landmarks to output refined landmarks in provided order.
     for (int i = 0; i < kLandmarks(cc).Count(); ++i) {
       const auto& landmarks = kLandmarks(cc)[i].Get();
       const auto& refinement = options_.refinement(i);