diff --git a/word/Editor/Run.js b/word/Editor/Run.js
index c5b0d0699e..edbdbbdc49 100644
--- a/word/Editor/Run.js
+++ b/word/Editor/Run.js
@@ -4861,7 +4861,7 @@ ParaRun.prototype.Recalculate_Range = function(PRS, ParaPr, Depth)
 							}
 							isVisualFieldChar = true;
 						}
-						else if (oComplexField.IsFormCheckBox())
+						else if (oComplexField && oComplexField.IsFormCheckBox())
 						{
 							isVisualFieldChar = true;
 							Item.SetFormCheckBox(true);