diff --git a/src/design_patterns/transmembrane_transport.yaml b/src/design_patterns/transmembrane_transport.yaml
index c58e9cfabd..ea224d4d18 100644
--- a/src/design_patterns/transmembrane_transport.yaml
+++ b/src/design_patterns/transmembrane_transport.yaml
@@ -28,4 +28,6 @@ namespace:
   text: 'biological_process'
   
 equivalentTo:
-  text: "'transmembrane transport' and 'has primary input' some %s
+  text: "'transmembrane transport' and ('has primary input' some %s)"
+  vars:
+    - 'cargo'