diff --git a/src/Formats/ReadSchemaUtils.cpp b/src/Formats/ReadSchemaUtils.cpp
index d185b938ed6..f80d9ee41d2 100644
--- a/src/Formats/ReadSchemaUtils.cpp
+++ b/src/Formats/ReadSchemaUtils.cpp
@@ -203,6 +203,7 @@ ColumnsDescription readSchemaFromFormat(
             ErrorCodes::BAD_ARGUMENTS,
             "{} file format doesn't support schema inference. You must specify the structure manually",
             format_name);
+    /// Some formats like CSVWithNames can contain empty column names. We don't support empty column names and futher processing can fail with an exception. Let's just remove columns with empty names from the structure.
     names_and_types.erase(
         std::remove_if(names_and_types.begin(), names_and_types.end(), [](const NameAndTypePair & pair) { return pair.name.empty(); }),
         names_and_types.end());