diff --git a/dbms/src/Functions/FunctionsDuration.cpp b/dbms/src/Functions/FunctionsDuration.cpp
index 0d328201fb6..f1a00089343 100644
--- a/dbms/src/Functions/FunctionsDuration.cpp
+++ b/dbms/src/Functions/FunctionsDuration.cpp
@@ -103,7 +103,7 @@ DataTypePtr FunctionMyDurationToSec<Impl>::getReturnTypeImpl(const ColumnsWithTy
     if (!arguments[0].type->isMyTime())
     {
         throw Exception(
-            fmt::format("Illegal type {} of first argument of function {}", arguments[0].type->getName(), getName()),
+            fmt::format("Illegal type {} of the first argument of function {}", arguments[0].type->getName(), getName()),
             ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
     }
     return std::make_shared<DataTypeInt64>();
@@ -117,7 +117,7 @@ void FunctionMyDurationToSec<Impl>::executeImpl(Block & block, const ColumnNumbe
     {
         throw Exception(
             fmt::format(
-                "Illegal column {} of first argument of function {}",
+                "Illegal column {} of the first argument of function {}",
                 block.getByPosition(arguments[0]).column->getName(),
                 name),
             ErrorCodes::ILLEGAL_COLUMN);
@@ -132,7 +132,7 @@ void FunctionMyDurationToSec<Impl>::executeImpl(Block & block, const ColumnNumbe
         auto col_to = ColumnVector<Int64>::create(size);
         typename ColumnVector<Int64>::Container & vec_to = col_to->getData();
 
-        for (size_t i = 0; i < vec_from.size(); ++i)
+        for (size_t i = 0; i < size; ++i)
         {
             MyDuration val(vec_from[i], from_type->getFsp());
             vec_to[i] = Impl::apply(val);
@@ -142,7 +142,7 @@ void FunctionMyDurationToSec<Impl>::executeImpl(Block & block, const ColumnNumbe
     else
         throw Exception(
             fmt::format(
-                "Illegal column {} of first argument of function {}",
+                "Illegal column {} of the first argument of function {}",
                 block.getByPosition(arguments[0]).column->getName(),
                 name),
             ErrorCodes::ILLEGAL_COLUMN);
diff --git a/dbms/src/Functions/tests/gtest_duration_pushdown.cpp b/dbms/src/Functions/tests/gtest_duration_pushdown.cpp
index d05cd372e3d..106f3d84642 100644
--- a/dbms/src/Functions/tests/gtest_duration_pushdown.cpp
+++ b/dbms/src/Functions/tests/gtest_duration_pushdown.cpp
@@ -230,7 +230,7 @@ try
     std::random_device rd;
     std::default_random_engine gen = std::default_random_engine(rd());
     std::uniform_int_distribution<int> sign_dis(0, 1), hour_dis(0, 838), minute_dis(0, 59), second_dis(0, 59), microSecond_dis(0, 999999);
-    for (int i = 0; i < rowNum; i++)
+    for (int i = 0; i < rowNum; ++i)
     {
         auto sign = (sign_dis(gen) == 0) ? 1 : -1;
         auto hour = hour_dis(gen);