diff --git a/src/sqlingvo/compiler.clj b/src/sqlingvo/compiler.clj
index e6a0e6d..1fd0ad0 100644
--- a/src/sqlingvo/compiler.clj
+++ b/src/sqlingvo/compiler.clj
@@ -422,7 +422,8 @@
 (defmethod compile-sql :list [db {:keys [children]}]
   (concat-sql "(" (join-sql ", " (map #(compile-sql db %1) children)) ")"))
 
-(defmethod compile-sql :nil [db _] ["NULL"])
+(defmethod compile-sql :nil [db {:keys [as]}]
+  (concat-sql "NULL" (compile-alias db as)))
 
 (defmethod compile-sql :offset [db {:keys [start]}]
   (concat-sql "OFFSET " (if (number? start) (str start) "0")))