diff --git a/elements/neuron/d-branch.md b/elements/neuron/d-branch.md
index 07fe9a2..4b491ac 100644
--- a/elements/neuron/d-branch.md
+++ b/elements/neuron/d-branch.md
@@ -8,7 +8,7 @@ include_toc: true
 
 Expansions and modulations:
 - is expanded by: [NEURON](neuron.md)
-- expands: [POSTSYNAPSE](posynapse.md)
+- expands: [POSTSYNAPSE](postsynapse.md)
 
 ```Gen
 D-BRANCH