diff --git a/lib/buildChunkGraph.js b/lib/buildChunkGraph.js
index d01920ddc..510e6a2f7 100644
--- a/lib/buildChunkGraph.js
+++ b/lib/buildChunkGraph.js
@@ -277,7 +277,7 @@ const visitModules = (
 	 * @returns {void}
 	 */
 	const iteratorBlock = b => {
-		// 1. We create a chunk group for this Block
+		// 1. We create a chunk group with single chunk in it for this Block
 		// but only once (blockChunkGroups map)
 		let cgi = blockChunkGroups.get(b);
 		/** @type {ChunkGroup} */
@@ -327,7 +327,8 @@ const visitModules = (
 			c = cgi.chunkGroup;
 		}
 
-		// 2. We store the Block+Chunk mapping as dependency for the chunk
+		// 2. We store the Block + Chunk Group mapping as dependency
+		// for the chunk group which is set in processQueue
 		let deps = chunkGroupDependencies.get(chunkGroup);
 		if (!deps) chunkGroupDependencies.set(chunkGroup, (deps = []));
 		deps.push({
@@ -335,7 +336,7 @@ const visitModules = (
 			chunkGroup: c
 		});
 
-		// 3. We create/update the chunk group info
+		// 3. We enqueue the chunk group info creation/updating
 		let connectList = queueConnect.get(chunkGroupInfo);
 		if (connectList === undefined) {
 			connectList = new Set();