diff --git a/chapter10.tex b/chapter10.tex
index 273e7c7..e282429 100644
--- a/chapter10.tex
+++ b/chapter10.tex
@@ -54,9 +54,9 @@ For example, the bit representation of $-43$
 as an \texttt{int} number is as follows:
 \[11111111111111111111111111010101\]
 
-In a signed representation, only nonnegative
+In an unsigned representation, only nonnegative
 numbers can be used, but the upper bound of the numbers is larger.
-A signed number of $n$ bits can contain any
+An unsigned number of $n$ bits can contain any
 integer between $0$ and $2^n-1$.
 For example, the \texttt{unsigned int} type in C++
 can contain any integer between $0$ and $2^{32}-1$.