diff --git a/src/blind.lua b/src/blind.lua
index b762105..22f314a 100644
--- a/src/blind.lua
+++ b/src/blind.lua
@@ -59,7 +59,7 @@ local function offset_operator(by)
 end
 
 local function to_number(x)
-    return type(x) == "table" and x:tonumber() or x
+    return type(x) == "table" and x:to_number() or x
 end
 
 SMODS.Blind	{