diff --git a/MVMCoreUI/Atoms/Views/MVMCoreUICheckBox.m b/MVMCoreUI/Atoms/Views/MVMCoreUICheckBox.m
index ff46aa6a..0158beb1 100644
--- a/MVMCoreUI/Atoms/Views/MVMCoreUICheckBox.m
+++ b/MVMCoreUI/Atoms/Views/MVMCoreUICheckBox.m
@@ -342,8 +342,10 @@ static const CGFloat CheckBoxHeightWidth = 18.0;
         [self.checkMark updateCheckSelected:NO animated:animated];
     }
     
-    FormValidator *formValidator = ((MVMCoreUIDelegateObject *)self.delegate).formValidationProtocol.formValidatorModel;
-    [formValidator enableByValidation];
+    if (self.delegate && [self.delegate respondsToSelector:@selector(formValidationProtocol)] && [[self.delegate performSelector:@selector(formValidationProtocol)] respondsToSelector:@selector(formValidatorModel)]) {
+        FormValidator *formValidator = [[self.delegate performSelector:@selector(formValidationProtocol)] performSelector:@selector(formValidatorModel)];
+        [formValidator enableByValidation];
+    }
 }
 
 - (void)setColor:(nullable UIColor *)color forState:(UIControlState)state {