diff --git a/trex.org b/trex.org
index 8f8292c..c9af8ec 100644
--- a/trex.org
+++ b/trex.org
@@ -817,7 +817,7 @@ power = [
     The Cholesky decomposition of the integrals can also be stored:
 
     \[
-    \A_{ijkl} = \sum_{\alpha} G_{il\alpha} G_{jl\alpha}
+    A_{ijkl} = \sum_{\alpha} G_{il\alpha} G_{jl\alpha}
     \]
 
     #+NAME: mo_2e_int