diff --git a/uiop/driver.lisp b/uiop/driver.lisp
index f36e02df060d0a1466a309ff82ef350b08da53fc..d05152823cc8fa9674af5b06125328405e0e37c9 100644
--- a/uiop/driver.lisp
+++ b/uiop/driver.lisp
@@ -14,4 +14,5 @@
    :uiop/run-program :uiop/lisp-build
    :uiop/configuration :uiop/backward-driver))
 
-#+mkcl (provide :uiop)
+;; Provide both lowercase and uppercase, to satisfy more people.
+(provide "uiop") (provide "UIOP")