diff --git a/src/components/input/multiselect.vue b/src/components/input/multiselect.vue
index c25de19fbc..a6857c0540 100644
--- a/src/components/input/multiselect.vue
+++ b/src/components/input/multiselect.vue
@@ -222,7 +222,7 @@ export default {
 			})
 		},
 		filteredSearchResults() {
-			if (this.multiple && this.internalValue !== null) {
+			if (this.multiple && this.internalValue !== null && Array.isArray(this.internalValue)) {
 				return this.searchResults.filter(item => !this.internalValue.some(e => e === item))
 			}
 
@@ -282,6 +282,9 @@ export default {
 			this.closeSearchResults()
 		},
 		setSelectedObject(object, resetOnly = false) {
+			if (!Array.isArray(object)) {
+				object = [object]
+			}
 			this.$set(this, 'internalValue', object)
 
 			// We assume we're getting an array when multiple is enabled and can therefore leave the query