diff --git a/main.c b/main.c
index 8951147..c3eddcc 100644
--- a/main.c
+++ b/main.c
@@ -5,7 +5,7 @@
 #define ALIGN4(s) (((((s)-1)>>2)<<2)+4)
 #define BLOCK_SIZE sizeof(struct block)
 
-/// The memory's block header.
+/// The memory block's header.
 struct block
 {
 	size_t size;