diff --git a/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm b/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm
index 63c502e4e2b91..345f8de1cfaf4 100644
--- a/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm
+++ b/shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm
@@ -433,6 +433,12 @@ - (NSUInteger)incrementOffsetPosition:(NSUInteger)position {
 
 - (UITextPosition*)positionFromPosition:(UITextPosition*)position offset:(NSInteger)offset {
   NSUInteger offsetPosition = ((FlutterTextPosition*)position).index;
+
+  NSInteger newLocation = (NSInteger)offsetPosition + offset;
+  if (newLocation < 0 || newLocation > (NSInteger)self.text.length) {
+    return nil;
+  }
+
   if (offset >= 0) {
     for (NSInteger i = 0; i < offset && offsetPosition < self.text.length; ++i)
       offsetPosition = [self incrementOffsetPosition:offsetPosition];