diff --git a/src/feedback/EAGLE/feedback_struct.h b/src/feedback/EAGLE/feedback_struct.h
index 3c69e8b11a36fc5bbb763270f865b82ea51dc58d..ad6d46da46ffc80cc9ab61a14416fc4d6d9b154b 100644
--- a/src/feedback/EAGLE/feedback_struct.h
+++ b/src/feedback/EAGLE/feedback_struct.h
@@ -43,6 +43,8 @@ struct feedback_spart_data {
 
     /**
      * @brief Values to be distributed to the gas neighbours.
+     *
+     * WARNING: The first two elements must be the enrichment_weight and mass!!
      */
     struct {