diff --git a/book/src/02_basic_calculator/04_panics.md b/book/src/02_basic_calculator/04_panics.md
index fa27169..bbfcdf0 100644
--- a/book/src/02_basic_calculator/04_panics.md
+++ b/book/src/02_basic_calculator/04_panics.md
@@ -38,7 +38,7 @@ fn main() {
 }
 ```
 
-There are other mechanism to work with recoverable errors in Rust, which [we'll cover later](../05_ticket_v2/06_fallibility).
+There are other mechanisms to work with recoverable errors in Rust, which [we'll cover later](../05_ticket_v2/06_fallibility).
 For the time being we'll stick with panics as a brutal but simple stopgap solution.
 
 ## References
@@ -55,4 +55,4 @@ For the time being we'll stick with panics as a brutal but simple stopgap soluti
 circumstances.
 
 [^macro]: If it's followed by a `!`, it's a macro invocation. Think of macros as spicy functions for now. We'll
-cover them in more detail later in the course.
\ No newline at end of file
+cover them in more detail later in the course.