diff --git a/core/survey/_surveyValidator/nodeDefValidationsValidator.js b/core/survey/_surveyValidator/nodeDefValidationsValidator.js
index 650e905b03..71f81e729d 100644
--- a/core/survey/_surveyValidator/nodeDefValidationsValidator.js
+++ b/core/survey/_surveyValidator/nodeDefValidationsValidator.js
@@ -16,7 +16,7 @@ const validateCountProp =
     const count = Validator.getProp(propName)(item)
     return Array.isArray(count)
       ? NodeDefExpressionsValidator.validate(survey, nodeDef, dependencyType)
-      : Validator.validatePositiveNumber(errorKey)(propName, item)
+      : Validator.validatePositiveOrZeroNumber(errorKey)(propName, item)
   }
 
 export const validate = async (survey, nodeDef) => {
diff --git a/webapp/components/survey/NodeDefDetails/ValidationsProps.js b/webapp/components/survey/NodeDefDetails/ValidationsProps.js
index 3e43aa5680..9131a6afe0 100644
--- a/webapp/components/survey/NodeDefDetails/ValidationsProps.js
+++ b/webapp/components/survey/NodeDefDetails/ValidationsProps.js
@@ -22,6 +22,8 @@ import { State } from './store'
 
 const countTypes = [NodeDefValidations.keys.min, NodeDefValidations.keys.max]
 
+const countPropNumberFormat = NumberFormats.integer({ allowNegative: false })
+
 const CountProp = (props) => {
   const { Actions, countType, nodeDef, nodeDefUuidContext, readOnly, state } = props
 
@@ -65,7 +67,7 @@ const CountProp = (props) => {
         excludeCurrentNodeDef
         valueTypeSelection
         determineValueType={determineValueType}
-        valueConstantEditorNumberFormat={NumberFormats.integer()}
+        valueConstantEditorNumberFormat={countPropNumberFormat}
       />
     </div>
   )