diff --git a/src/Storages/MergeTree/MergeTask.cpp b/src/Storages/MergeTree/MergeTask.cpp
index 9728a7df10c..20e8ed31cb2 100644
--- a/src/Storages/MergeTree/MergeTask.cpp
+++ b/src/Storages/MergeTree/MergeTask.cpp
@@ -1392,7 +1392,7 @@ bool MergeTask::execute()
 }
 
 
-/// Apply merge strategy (Ordinary, Colapsing, Aggregating, etc) to the stream
+/// Apply merge strategy (Ordinary, Collapsing, Aggregating, etc) to the stream
 class MergePartsStep : public ITransformingStep
 {
 public: