diff --git a/src/components/forms/EditAssignmentForm/EditAssignmentForm.js b/src/components/forms/EditAssignmentForm/EditAssignmentForm.js
index 919dd8e81..4182a261f 100644
--- a/src/components/forms/EditAssignmentForm/EditAssignmentForm.js
+++ b/src/components/forms/EditAssignmentForm/EditAssignmentForm.js
@@ -430,7 +430,10 @@ const validate = ({
 
   if (pointsPercentualThreshold) {
     const numericThreshold = Number(pointsPercentualThreshold);
-    if (pointsPercentualThreshold !== Math.round(numericThreshold).toString()) {
+    if (
+      pointsPercentualThreshold.toString() !==
+      Math.round(numericThreshold).toString()
+    ) {
       errors['pointsPercentualThreshold'] = (
         <FormattedMessage
           id="app.editAssignmentForm.validation.pointsPercentualThresholdMustBeInteger"