diff --git a/app/views/spree/api/variants/units_show.v1.rabl b/app/views/spree/api/variants/units_show.v1.rabl
index 326508bd4a..634213e53f 100644
--- a/app/views/spree/api/variants/units_show.v1.rabl
+++ b/app/views/spree/api/variants/units_show.v1.rabl
@@ -1,4 +1,9 @@
 object @variant
 attributes :id
-node( :unit_text ) { |v| v.product.name + (v.options_text.empty? ? "" : ": " +  v.options_text) }
+
+node( :unit_text ) do |v|
+  options_text = v.options_text
+  v.product.name + (options_text.empty? ? "" : ": #{options_text}")
+end
+
 node( :unit_value ) { |v| v.unit_value }