diff --git a/applypatch/imgdiff.cpp b/applypatch/imgdiff.cpp
index 91007ac..8586028 100644
--- a/applypatch/imgdiff.cpp
+++ b/applypatch/imgdiff.cpp
@@ -1038,20 +1038,21 @@
   split_tgt_image.Initialize(aligned_tgt_chunks, {});
   split_tgt_image.MergeAdjacentNormalChunks();
 
-  // Construct the dummy source file based on the src_ranges.
-  std::vector<uint8_t> src_content;
+  // Construct the split source file based on the split src ranges.
+  std::vector<uint8_t> split_src_content;
   for (const auto& r : split_src_ranges) {
     size_t end = std::min(src_image.file_content_.size(), r.second * BLOCK_SIZE);
-    src_content.insert(src_content.end(), src_image.file_content_.begin() + r.first * BLOCK_SIZE,
-                       src_image.file_content_.begin() + end);
+    split_src_content.insert(split_src_content.end(),
+                             src_image.file_content_.begin() + r.first * BLOCK_SIZE,
+                             src_image.file_content_.begin() + end);
   }
 
   // We should not have an empty src in our design; otherwise we will encounter an error in
-  // bsdiff since src_content.data() == nullptr.
-  CHECK(!src_content.empty());
+  // bsdiff since split_src_content.data() == nullptr.
+  CHECK(!split_src_content.empty());
 
   ZipModeImage split_src_image(true);
-  split_src_image.Initialize(split_src_chunks, src_content);
+  split_src_image.Initialize(split_src_chunks, split_src_content);
 
   split_tgt_images->push_back(std::move(split_tgt_image));
   split_src_images->push_back(std::move(split_src_image));
diff --git a/applypatch/include/applypatch/imgdiff_image.h b/applypatch/include/applypatch/imgdiff_image.h
index 6716051..aa8d129 100644
--- a/applypatch/include/applypatch/imgdiff_image.h
+++ b/applypatch/include/applypatch/imgdiff_image.h
@@ -211,7 +211,7 @@
 
   bool Initialize(const std::string& filename) override;
 
-  // Initialize a dummy ZipModeImage from an existing ImageChunk vector. For src img pieces, we
+  // Initialize a fake ZipModeImage from an existing ImageChunk vector. For src img pieces, we
   // reconstruct a new file_content based on the source ranges; but it's not needed for the tgt img
   // pieces; because for each chunk both the data and their offset within the file are unchanged.
   void Initialize(const std::vector<ImageChunk>& chunks, const std::vector<uint8_t>& file_content) {
@@ -265,7 +265,7 @@
                                   const std::vector<ZipModeImage>& split_src_images,
                                   std::vector<SortedRangeSet>& split_src_ranges,
                                   size_t total_tgt_size);
-  // Construct the dummy split images based on the chunks info and source ranges; and move them into
+  // Construct the fake split images based on the chunks info and source ranges; and move them into
   // the given vectors. Return true if we add a new split image into |split_tgt_images|, and
   // false otherwise.
   static bool AddSplitImageFromChunkList(const ZipModeImage& tgt_image,