diff --git a/latex/presentations/midterm/sections/decoding_algorithms.tex b/latex/presentations/midterm/sections/decoding_algorithms.tex
index 2449ca0..4034bbb 100644
--- a/latex/presentations/midterm/sections/decoding_algorithms.tex
+++ b/latex/presentations/midterm/sections/decoding_algorithms.tex
@@ -25,7 +25,7 @@
                 f_{\boldsymbol{X}}\left( \boldsymbol{x} \right)
                     = \frac{1}{\left| \mathcal{C}\left( \boldsymbol{H} \right)  \right| }
                         \sum_{c \in \mathcal{C}\left( \boldsymbol{H} \right) }
-                            \delta\left( \boldsymbol{x} - \boldsymbol{c} \right) 
+                        \delta\left( \boldsymbol{x} - \left( -1 \right)^{\boldsymbol{c}} \right) 
                     \approx \frac{1}{Z} e^{-\gamma h\left( x \right) }
             \end{align*}
         \item Code constraint polynomial: