diff --git a/elements/neuron/presynapse.md b/elements/neuron/presynapse.md
index 488b1c3..932a3d8 100644
--- a/elements/neuron/presynapse.md
+++ b/elements/neuron/presynapse.md
@@ -173,7 +173,7 @@ TRACE
 
 ```Gen
 
-MAIN
+DECAY
 
   type: container