diff --git a/content/notes/22-virtual-memory.md b/content/notes/22-virtual-memory.md
index 16e491f11..b81fa154e 100644
--- a/content/notes/22-virtual-memory.md
+++ b/content/notes/22-virtual-memory.md
@@ -45,7 +45,7 @@ implementing
 note: each page can be stored twice: loaded in main memory and in the backing store - these two copies need to remain consistent. i.e.., changes to one must be reflected in the other
 
 page faults
-- "trap" occurs when trying to access and invalid page
+- "trap" occurs when trying to access an invalid page
 - what the os does:
 	- check if caused by invalid memory access or unavailable page frame
 	- if nvalid mem access