diff --git a/packages/flutter/lib/src/widgets/form.dart b/packages/flutter/lib/src/widgets/form.dart
index 4c231d1..0d841b3 100644
--- a/packages/flutter/lib/src/widgets/form.dart
+++ b/packages/flutter/lib/src/widgets/form.dart
@@ -569,7 +569,7 @@
   /// value.
   ///
   /// Alternating between error and normal state can cause the height of the
-  /// [TextFormField] to change if no other subtext decoration is set on the
+  /// [TextFormField] to change if no other supporting text decoration is set on the
   /// field. To create a field whose height is fixed regardless of whether or
   /// not an error is displayed, either wrap the  [TextFormField] in a fixed
   /// height parent like [SizedBox], or set the [InputDecoration.helperText]