diff --git a/measure_definitions/amox_500_15_caps.yaml b/measure_definitions/amox_500_15_caps.yaml
index f0888fae..66cf93bc 100644
--- a/measure_definitions/amox_500_15_caps.yaml
+++ b/measure_definitions/amox_500_15_caps.yaml
@@ -19,5 +19,7 @@ options:
   output_value: custom
 queries:
   - numerator:
+      quantity_per_item:
+        - ">15"
       bnf_codes:
         - ""