diff --git a/anda/devs/ghostty/nightly/ghostty-nightly.spec b/anda/devs/ghostty/nightly/ghostty-nightly.spec
index e5ac06aff1..81b7601997 100644
--- a/anda/devs/ghostty/nightly/ghostty-nightly.spec
+++ b/anda/devs/ghostty/nightly/ghostty-nightly.spec
@@ -196,7 +196,7 @@ This package contains the libraries and header files that are needed for develop
 
 %prep
 /usr/bin/minisign -V -m %{SOURCE0} -x %{SOURCE1} -P %{public_key}
-%autosetup -n %{base_name}-%{ver}-main+%{shortcommit}
+%autosetup -n %{base_name}-source
 
 ZIG_GLOBAL_CACHE_DIR="%{_zig_cache_dir}" ./nix/build-support/fetch-zig-cache.sh