diff --git a/src/2_waker_context.md b/src/2_waker_context.md
index 61613c6..ae2c1ab 100644
--- a/src/2_waker_context.md
+++ b/src/2_waker_context.md
@@ -139,7 +139,7 @@ fn main() {
     // length of the array is encoded in the array itself as the second value.
     let vtable = vec![
         0,            // pointer to `Drop` (which we're not implementing here)
-        6,            // lenght of vtable
+        6,            // length of vtable
         8,            // alignment
 
         // we need to make sure we add these in the same order as defined in the Trait.