diff --git a/frontend/src/components/forms/MultiselectInputComponent.vue b/frontend/src/components/forms/MultiselectInputComponent.vue
index 881934e6b1..2fff4ae5cf 100644
--- a/frontend/src/components/forms/MultiselectInputComponent.vue
+++ b/frontend/src/components/forms/MultiselectInputComponent.vue
@@ -77,7 +77,7 @@ const emitChange = () => {
 
 const addFromSelection = (itemCode: string) => {
   const reference = props.modelValue.find((entry) => entry.name === itemCode);
-  if (reference) {
+  if (reference && !items.value.includes(reference.name)) {
     items.value.push(reference.name);
     selectedValue.value = items.value.join(",");
   }