diff --git a/yoga/YGNode.cpp b/yoga/YGNode.cpp
index 5a33c6e8..7a71058a 100644
--- a/yoga/YGNode.cpp
+++ b/yoga/YGNode.cpp
@@ -225,11 +225,11 @@ void YGNode::setDirtiedFunc(YGDirtiedFunc dirtiedFunc) {
   dirtied_ = dirtiedFunc;
 }
 
-void YGNode::setStyle(YGStyle style) {
+void YGNode::setStyle(const YGStyle& style) {
   style_ = style;
 }
 
-void YGNode::setLayout(YGLayout layout) {
+void YGNode::setLayout(const YGLayout& layout) {
   layout_ = layout;
 }
 
@@ -241,7 +241,7 @@ void YGNode::setParent(YGNodeRef parent) {
   parent_ = parent;
 }
 
-void YGNode::setChildren(YGVector children) {
+void YGNode::setChildren(const YGVector& children) {
   children_ = children;
 }
 
diff --git a/yoga/YGNode.h b/yoga/YGNode.h
index 27a1ed68..081bc235 100644
--- a/yoga/YGNode.h
+++ b/yoga/YGNode.h
@@ -106,13 +106,13 @@ struct YGNode {
   void setMeasureFunc(YGMeasureFunc measureFunc);
   void setBaseLineFunc(YGBaselineFunc baseLineFunc);
   void setDirtiedFunc(YGDirtiedFunc dirtiedFunc);
-  void setStyle(YGStyle style);
+  void setStyle(const YGStyle& style);
   void setStyleFlexDirection(YGFlexDirection direction);
   void setStyleAlignContent(YGAlign alignContent);
-  void setLayout(YGLayout layout);
+  void setLayout(const YGLayout& layout);
   void setLineIndex(uint32_t lineIndex);
   void setParent(YGNodeRef parent);
-  void setChildren(YGVector children);
+  void setChildren(const YGVector& children);
   void setNextChild(YGNodeRef nextChild);
   void setConfig(YGConfigRef config);
   void setDirty(bool isDirty);