diff --git a/paper/termpaper.tex b/paper/termpaper.tex
index 3a45f43..6dbc282 100644
--- a/paper/termpaper.tex
+++ b/paper/termpaper.tex
@@ -120,7 +120,7 @@ this project is completed. Since the cost of each project is a function of its
 degree of completion, the goal is to select a set of projects where the cost of
 the degree of completion does not exceed the budget limit:
 \begin{equation}\label{eq:2}
-    \sum_{p\in A}{c(\mu(p))\leq B}.
+    \sum_{p\in A}{\mu(p)\cdot c(p)\leq B}.
 \end{equation}
 
 Common ways to design the input method is to ask the voters to approve a subset