diff --git a/src/11_nearly_free_electron_model_solutions.md b/src/11_nearly_free_electron_model_solutions.md
index 0d7b0ba6063d0993cc1479408371f99c477a03c8..7545e38582d3c5f80500ba903ae3fcd5843da293 100644
--- a/src/11_nearly_free_electron_model_solutions.md
+++ b/src/11_nearly_free_electron_model_solutions.md
@@ -165,11 +165,11 @@ and
 
 In the limit $\kappa a \gg 1$ (i.e., where the distance between the delta functions is large compared to the width of $|n\rangle$), the onsite energy becomes
 $$
-\langle n|H|n \rangle = \epsilon_0 - 2\kappa \lambda e^{-2\kappa a}
+\langle n|H|n \rangle = \epsilon_0(1-4 e^{-2\kappa a})
 $$
 and the hopping becomes
 $$
-\langle n-1|H|n \rangle = (\epsilon_0 \kappa a  - \kappa \lambda) e^{-\kappa a}
+\langle n-1|H|n \rangle = \epsilon_0 (\kappa a  - 2) e^{-\kappa a}
 $$
 
 ### Subquestion 4