diff --git a/elements/neuron/presynapse.md b/elements/neuron/presynapse.md
index f64ac83..809f9d9 100644
--- a/elements/neuron/presynapse.md
+++ b/elements/neuron/presynapse.md
@@ -8,7 +8,7 @@ include_toc: true
 
 Intro:
   - is expanded and developed by: [AXON](axon.md)
-  - is tuned by: ORGANISM, organs, modules
+  - is tuned by: [ORGANISM](../../organism.md), organs, modules
   - expands and tunes: [PRE_VGG](pre_vgcc.md)
   - develops [_Ca2](), [_Rrp]()