diff --git a/content/method/method.tex b/content/method/method.tex
index 04e35d8..673c343 100644
--- a/content/method/method.tex
+++ b/content/method/method.tex
@@ -695,7 +695,7 @@ of both classes.
 \begin{proposition}[Gradient balance]
 \label{prop:gradient-balance}
 Let $\mathcal{F}$ be any distribution family whose CDF estimator is translation-invariant,
-meaning $\hat{F}_k(t\,;\,\mathbf{s}+\delta\mathbf{1}) = \hat{F}_k(t-\delta\,;\,\mathbf{s})$
+meaning $\hat{F}_k(t\,;\,\mathbf{s}+\delta) = \hat{F}_k(t-\delta\,;\,\mathbf{s})$
 for all $\delta \in \mathbb{R}$. Then for any batch $\mathcal{B} = \mathcal{B}_0 \cup \mathcal{B}_1$:
 \begin{equation}
   \sum_{\mathbf{x}_i \in \mathcal{B}_1}