diff --git a/systems/error.md b/systems/error.md
index 6692739..9caa6d5 100644
--- a/systems/error.md
+++ b/systems/error.md
@@ -117,7 +117,7 @@ where $\| \cdot \|$ is the 2-norm.
 ```
 
 ```{div} note
-The operator norm satisies the property $\| A \boldsymbol{x} \| \leq \| A \| \| \boldsymbol{x} \|$ for all $\boldsymbol{x} \in \mathbb{R}^n$.
+The operator norm satisfies the property $\| A \boldsymbol{x} \| \leq \| A \| \| \boldsymbol{x} \|$ for all $\boldsymbol{x} \in \mathbb{R}^n$.
 ```
 
 ````{div} theorem
@@ -294,4 +294,4 @@ Suppose $A$ is a 2 by 2 matrix such that the image of the unit circle under the
 ![/img/01_02_02.png](/img/01_02_03.png)
 
 Determine $\mathrm{cond}(A)$.
-```
\ No newline at end of file
+```