diff --git a/src/aliasing.md b/src/aliasing.md
index 3c2df8d3..23fe4005 100644
--- a/src/aliasing.md
+++ b/src/aliasing.md
@@ -88,7 +88,7 @@ These optimizations also tend to prove the soundness of bigger optimizations
 such as loop vectorization, constant propagation, and dead code elimination.
 
 In the previous example, we used the fact that `&mut u32` can't be aliased to prove
-that writes to `*output` can't possibly affect `*input`. This let us cache `*input`
+that writes to `*output` can't possibly affect `*input`. This lets us cache `*input`
 in a register, eliminating a read.
 
 By caching this read, we knew that the write in the `> 10` branch couldn't