diff --git a/dbms/src/TableFunctions/TableFunctionGenerate.h b/dbms/src/TableFunctions/TableFunctionGenerate.h
index 0002acd54b1..e4c7f9beeba 100644
--- a/dbms/src/TableFunctions/TableFunctionGenerate.h
+++ b/dbms/src/TableFunctions/TableFunctionGenerate.h
@@ -4,7 +4,7 @@
 
 namespace DB
 {
-/* random(structure(, max_array_length, max_string_length, random_seed)) - creates a temporary storage that generates columns with random data
+/* generate(structure, [max_array_length, max_string_length, random_seed]) - creates a temporary storage that generates columns with random data
  */
 class TableFunctionGenerate : public ITableFunction
 {