diff --git a/resources/js/processes/modeler/components/inspector/TaskAssignment.vue b/resources/js/processes/modeler/components/inspector/TaskAssignment.vue
index 44448f78a5..9c0db174a1 100644
--- a/resources/js/processes/modeler/components/inspector/TaskAssignment.vue
+++ b/resources/js/processes/modeler/components/inspector/TaskAssignment.vue
@@ -333,7 +333,11 @@
         this.$set(this.node, "assignmentRules", JSON.stringify(value));
       },
       assignmentSupportsSelfService (assignmentType) {
-        return ['process_variable', 'user_group', 'rule_expression'].includes(assignmentType);
+        let options = ['process_variable', 'user_group', 'rule_expression'];
+        if (_.get(this.node, "loopCharacteristics") !== 'undefined') {
+          options = ['user_group', 'rule_expression'];
+        }
+        return options.includes(assignmentType);
       },
     },
     watch: {