diff --git a/notes/TODO.md b/notes/TODO.md
index ffa46ad..cb7454e 100755
--- a/notes/TODO.md
+++ b/notes/TODO.md
@@ -31,7 +31,7 @@
 - Rubik's group
 - Graph combinatorics
 - Fourier transforms
-- Probabalistic proofs
+- Probabilistic proofs
 - Bayesian / Frequentist probability
 - Data structures