diff --git a/chapter-hsms/chapter.tex b/chapter-hsms/chapter.tex
index 69cfcd3..e4387f1 100644
--- a/chapter-hsms/chapter.tex
+++ b/chapter-hsms/chapter.tex
@@ -850,7 +850,7 @@ copper FPCs are commonly used for meshes. Interestingly, they seem to be a poor
 can even be forcibly separated from some potting compounds without destroying their traces.
 
 The weakest systems we found completely omitted a tamper sensing mesh. Ironically, all of these systems were devices
-marketed as hardware secuirty modules. Given the inexpensive nature of tamper sensing meshes and the high price point of
+marketed as hardware security modules. Given the inexpensive nature of tamper sensing meshes and the high price point of
 such devices, we suspect market segmentation as a driving force behind their manufacturers' decision to omit tamper
 sensing meshes. We conclude from this observation that the term ``HSM'' does not imply state-of-the-art physical tamper
 sensing.