diff --git a/RockWeb/Blocks/Event/RegistrationEntry.ascx.cs b/RockWeb/Blocks/Event/RegistrationEntry.ascx.cs
index c8facc32bb2..b4d6513bf07 100644
--- a/RockWeb/Blocks/Event/RegistrationEntry.ascx.cs
+++ b/RockWeb/Blocks/Event/RegistrationEntry.ascx.cs
@@ -4715,7 +4715,7 @@ private object ParsePersonField( RegistrationTemplateFormField field )
 
                 case RegistrationPersonFieldType.Grade:
                     var gpGrade = phRegistrantControls.FindControl( "gpGrade" ) as GradePicker;
-                    return gpGrade != null ? Person.GraduationYearFromGradeOffset( gpGrade.SelectedValueAsInt() ) : null;
+                    return gpGrade != null ? Person.GraduationYearFromGradeOffset( gpGrade.SelectedValueAsInt( false ) ) : null;
 
                 case RegistrationPersonFieldType.Gender:
                     var ddlGender = phRegistrantControls.FindControl( "ddlGender" ) as RockDropDownList;