diff --git a/packages/frontend/editor-ui/src/components/ResourceMapper/MappingFields.vue b/packages/frontend/editor-ui/src/components/ResourceMapper/MappingFields.vue
index 119b92c0f7..da3446a858 100644
--- a/packages/frontend/editor-ui/src/components/ResourceMapper/MappingFields.vue
+++ b/packages/frontend/editor-ui/src/components/ResourceMapper/MappingFields.vue
@@ -449,7 +449,7 @@ defineExpose({
 	padding: 0 0 0 var(--spacing-s);
 
 	.parameterInput {
-		width: 100%;
+		width: calc(100% - var(--delete-option-width));
 	}
 
 	.parameterInput:first-child {