diff --git a/packages/flutter/lib/src/rendering/layout_helper.dart b/packages/flutter/lib/src/rendering/layout_helper.dart
index 636de83bcc..d0bb135743 100644
--- a/packages/flutter/lib/src/rendering/layout_helper.dart
+++ b/packages/flutter/lib/src/rendering/layout_helper.dart
@@ -33,8 +33,8 @@ class ChildLayoutHelper {
   ///
   ///  * [layoutChild], which actually lays out the child with the given
   ///    constraints.
-  static Size dryLayoutChild(RenderBox child, BoxConstraints constrains) {
-    return child.getDryLayout(constrains);
+  static Size dryLayoutChild(RenderBox child, BoxConstraints constraints) {
+    return child.getDryLayout(constraints);
   }
 
   /// Lays out the [RenderBox] with the given constraints and returns its