diff --git a/bitbake/bin/bitbake-prserv b/bitbake/bin/bitbake-prserv
index 580e021fda..3992e84eab 100755
--- a/bitbake/bin/bitbake-prserv
+++ b/bitbake/bin/bitbake-prserv
@@ -80,7 +80,7 @@ def main():
     parser.add_argument(
         "-u",
         "--upstream",
-        default=os.environ.get("PRSERVER_UPSTREAM", None),
+        default=os.environ.get("PRSERV_UPSTREAM", None),
         help="Upstream PR service (host:port)",
     )