diff --git a/script/bundle-mac b/script/bundle-mac
index bc95e1dd6a9285ec5ef1a22bd4cd210c12a302c7..230722ecfa99ed29c496e8422d28338d4b1cb794 100755
--- a/script/bundle-mac
+++ b/script/bundle-mac
@@ -97,7 +97,7 @@ popd
 pushd crates/zed
 cp Cargo.toml Cargo.toml.backup
 sed \
-    -i .backup \
+    -i.backup \
     "s/package.metadata.bundle-${channel}/package.metadata.bundle/" \
     Cargo.toml