diff --git a/rust2rpm/__main__.py b/rust2rpm/__main__.py
index a011217..2cffd40 100644
--- a/rust2rpm/__main__.py
+++ b/rust2rpm/__main__.py
@@ -448,7 +448,7 @@ def main():
 
     rpmautospec = args.rpmautospec
     if args.rpmautospec is None:
-        rpmautospec = detect_rpmautospec(default_target, spec_file)
+        rpmautospec = detect_rpmautospec(args.target, spec_file)
     kwargs["rpmautospec"] = rpmautospec
 
     kwargs["relative_license_paths"] = args.relative_license_paths