diff --git a/src/1_einstein_model.md b/src/1_einstein_model.md
index 2f875851afea4225c5a86ab1d230c32893520df7..9b17747641ededa3c30450b980acb72b757ce43b 100644
--- a/src/1_einstein_model.md
+++ b/src/1_einstein_model.md
@@ -247,7 +247,7 @@ $$
 n_B(\omega,T) = \frac{1}{e^{\hbar\omega/k_B T} - 1}.
 $$
 
-Substituting $n_B$ into, the expression for the oscillator energy, obtain the expectation value of the energy stored in the oscillator at temperature $T$—the *thermal energy*:
+Substituting $n_B$ into, the expression for the oscillator energy, we obtain the expectation value of the energy stored in the oscillator at temperature $T$—the *thermal energy*:
 $$
 \begin{align}
 \langle E \rangle &= \frac{1}{2}\hbar\omega_0+\hbar\omega_0 \langle n \rangle \\