diff --git a/checkarg.lua b/checkarg.lua
index 1c57c98..51ed616 100644
--- a/checkarg.lua
+++ b/checkarg.lua
@@ -28,6 +28,10 @@ function checkfunc(n)
     do_check(n, "function")
 end
 
+function checkfunction(n)
+    do_check(n, "function")
+end
+
 function checktable(n)
     do_check(n, "table")
 end