diff --git a/matrix-synapse.spec b/matrix-synapse.spec
index 3b49d10..1a98ca3 100644
--- a/matrix-synapse.spec
+++ b/matrix-synapse.spec
@@ -77,7 +77,7 @@ the ecosystem.
 
 
 %prep
-%autosetup -p1 -n %{srcname}-%{version}%{rcx}
+%autosetup -p1 -n %{srcname}-%{ghversion}%{rcx}
 
 # We don't support the built-in client so remove all the bundled JS.
 rm -rf synapse/static