diff --git a/desmos.md b/desmos.md
index c528721..9bbf23a 100644
--- a/desmos.md
+++ b/desmos.md
@@ -22,7 +22,7 @@ by the triangular table of this integer sequence:
 
 [punching it into wolfram][smoothie] (try changing n)
 
-[smoothie]: (https://www.wolframalpha.com/input/?i=ReplaceAll%5BBinomial%5Bn+%2B+k+-+2,+k+-+1%5D+Binomial%5B2+n+-+1,+n+-+k%5D,+%7Bk+-%3E+Range%5B1,n%5D%7D%5D+where+n+%3D+12)
+[smoothie]: https://www.wolframalpha.com/input/?i=ReplaceAll%5BBinomial%5Bn+%2B+k+-+2,+k+-+1%5D+Binomial%5B2+n+-+1,+n+-+k%5D,+%7Bk+-%3E+Range%5B1,n%5D%7D%5D+where+n+%3D+12
 
 ### [smoothstep alternatives](https://www.desmos.com/calculator/ibigyiumzb)