diff --git a/docs/5_atoms_and_lcao_solutions.md b/docs/5_atoms_and_lcao_solutions.md
index 7ed63c8218c50935f9779657601ae28379acacee..ffafd7ca5f31340609a2159a5c4412eeff0f870a 100644
--- a/docs/5_atoms_and_lcao_solutions.md
+++ b/docs/5_atoms_and_lcao_solutions.md
@@ -99,7 +99,7 @@ $$
 $$
 From this we find 
 $$
-\beta = -\frac{E_\pm- E_0 + \gamma}{t}\alpha = -\frac{\pm\sqrt{t^2+\gamma^2}}{t}\alpha 
+\beta = -\frac{E_\pm- E_0 + \gamma}{t}\alpha = -\frac{\pm\sqrt{t^2+\gamma^2}+\gamma}{t}\alpha 
 $$
 Then, using the normalization condition $\alpha^2+\beta^2$=1, we find the normalized eigenfunction.