diff --git a/05C12-HammingMetric.tex b/05C12-HammingMetric.tex
index 6c7202a..6a98826 100644
--- a/05C12-HammingMetric.tex
+++ b/05C12-HammingMetric.tex
@@ -46,9 +46,9 @@
 \,$u =(0,1,1,0,1,0,1)$\, and \,$v =(1,0,1,0,1,0,1)$\,
  then
 \[
-d_H(u,v) = |0-1|+ |1-0| + |1-1| + |0-0|+|1-1| + |0-0| + |1-1| = 3
+d_H(u,v) = |0-1|+ |1-0| + |1-1| + |0-0|+|1-1| + |0-0| + |1-1| = 2
 \]
-because $u$ and $v$ have different bits at three positions.
+because $u$ and $v$ have different bits at two positions.
 
 The Hamming distance holds the properties of a metric (otherwise it would not be truly a distance):
 \begin{itemize}