diff --git a/content/blog/09_compiler_garbage_collection.md b/content/blog/09_compiler_garbage_collection.md
index 6dc0ff0..72a6039 100644
--- a/content/blog/09_compiler_garbage_collection.md
+++ b/content/blog/09_compiler_garbage_collection.md
@@ -128,7 +128,7 @@ there's another way.
 We clean up after ourselves.
 
 ### Towards a Cleaner Stack
-Simon Peyton Jones wrote his G-machine semantics in a particular way. Every time
+The G-machine compilation rules Simon Peyton Jones presents are written in a particular way. Every time
 that a function is called, all it leaves behind on the stack is the graph node
 that represents the function's output. Our own internal functions, however, have been less
 careful. Consider, for instance, the "binary operator" function I showed you.