diff --git a/dev/bots/analyze-sample-code.dart b/dev/bots/analyze-sample-code.dart
index 115c7c6..436803c 100644
--- a/dev/bots/analyze-sample-code.dart
+++ b/dev/bots/analyze-sample-code.dart
@@ -715,7 +715,7 @@
   final String code;
 
   String toStringWithColumn(int column) {
-    if (column != null) {
+    if (column != null && indent != null) {
       return '$filename:$line:${column + indent}: $code';
     }
     return toString();