diff --git a/ReactCommon/react/renderer/animations/LayoutAnimationKeyFrameManager.cpp b/ReactCommon/react/renderer/animations/LayoutAnimationKeyFrameManager.cpp
index 31e08ff8dcc..846085ed04d 100644
--- a/ReactCommon/react/renderer/animations/LayoutAnimationKeyFrameManager.cpp
+++ b/ReactCommon/react/renderer/animations/LayoutAnimationKeyFrameManager.cpp
@@ -785,7 +785,7 @@ LayoutAnimationKeyFrameManager::pullTransaction(
         // don't want to queue up any final UPDATE mutations here.
         bool shouldGenerateSyntheticMutations =
             keyFrame.generateFinalSyntheticMutations;
-        bool numFinalMutations = keyFrame.finalMutationsForKeyFrame.size();
+        auto numFinalMutations = keyFrame.finalMutationsForKeyFrame.size();
         bool onlyMutationIsUpdate =
             (numFinalMutations == 1 &&
              keyFrame.finalMutationsForKeyFrame[0].type ==