diff --git a/api/js/etemplate/Et2InputWidget/Et2InputWidget.ts b/api/js/etemplate/Et2InputWidget/Et2InputWidget.ts
index db8520cc62..efe6f3e48a 100644
--- a/api/js/etemplate/Et2InputWidget/Et2InputWidget.ts
+++ b/api/js/etemplate/Et2InputWidget/Et2InputWidget.ts
@@ -222,7 +222,7 @@ const Et2InputWidgetMixin = <T extends Constructor<LitElement>>(superclass : T)
 			if(changedProperties.has('required'))
 			{
 				// Remove all existing Required validators (avoids duplicates)
-				this.validators = (this.validators || []).filter((validator) => validator instanceof Required)
+				this.validators = (this.validators || []).filter((validator) => !(validator instanceof Required))
 				if(this.required)
 				{
 					this.validators.push(new Required());
diff --git a/api/js/etemplate/Et2Textbox/Et2Textbox.ts b/api/js/etemplate/Et2Textbox/Et2Textbox.ts
index 1b2d6cefed..f21aa390d5 100644
--- a/api/js/etemplate/Et2Textbox/Et2Textbox.ts
+++ b/api/js/etemplate/Et2Textbox/Et2Textbox.ts
@@ -76,7 +76,7 @@ export class Et2Textbox extends Et2InputWidget(SlInput)
 		if(changedProperties.has('validator'))
 		{
 			// Remove all existing Pattern validators (avoids duplicates)
-			this.validators = (this.validators || []).filter((validator) => validator instanceof Regex)
+			this.validators = (this.validators || []).filter((validator) => !(validator instanceof Regex))
 			this.validators.push(new Regex(this.validator));
 		}
 	}