diff --git a/Falstad-notes.md b/Falstad-notes.md
index 05e6106..14a07bf 100644
--- a/Falstad-notes.md
+++ b/Falstad-notes.md
@@ -1,7 +1,6 @@
 Playing around with 555s to try to understand the Fastest Env in the West:
 
-https://tinyurl.com/2atavgvx - simply inverts the input, showing how the trigger pin activates by pulling it low (technically below 1/3rd of Vcc)
-
+https://tinyurl.com/yv3pnm7y - simply inverts the input, showing how the trigger pin activates by pulling it low (technically below 1/3rd of Vcc)
 
 https://tinyurl.com/26ht4nb5 - A flip flop, of sorts.  Set results in high output, reset results in low output.