diff --git a/elements/neuron/presynapse.md b/elements/neuron/presynapse.md
index 0cce542..71fddca 100644
--- a/elements/neuron/presynapse.md
+++ b/elements/neuron/presynapse.md
@@ -6,7 +6,7 @@ include_toc: true
 
 Modulation:
 - develops:
-    - [VGCC_PRE](Vgcc_pre) 
+    - [VGCC_PRE](https://repo.splindex.net/ocrampal/organism/src/branch/master/elements/neuron/presynapse.md#vgcc-pre) 
 
 Qui comprendiamo: