diff --git a/implementations/caching/Cache.cpp b/implementations/caching/Cache.cpp
index e4cbac53..45b5b281 100644
--- a/implementations/caching/Cache.cpp
+++ b/implementations/caching/Cache.cpp
@@ -48,7 +48,7 @@ void Cache::push(unique_ptr<Block> block) {
 void Cache::_popOldEntries() {
   lock_guard<mutex> lock(_mutex);
   while(_cachedBlocks.size() > 0 && _cachedBlocks.peek()->ageSeconds() > PURGE_LIFETIME_SEC) {
-	_cachedBlocks.pop();
+    _cachedBlocks.pop();
   }
 }
 
diff --git a/implementations/caching/QueueMap.h b/implementations/caching/QueueMap.h
index c8814691..e3cbb0ec 100644
--- a/implementations/caching/QueueMap.h
+++ b/implementations/caching/QueueMap.h
@@ -11,8 +11,7 @@
 namespace blockstore {
 namespace caching {
 
-//TODO Test
-//TODO Move to utils
+// A class that is a queue and a map at the same time. We could also see it as an addressable queue.
 template<class Key, class Value>
 class QueueMap {
 public: