diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala
index 2c1df96f84798..76f6feeebfc90 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala
@@ -324,8 +324,7 @@ case class Hex(child: Expression)
   }
 
   /**
-   * Convert every character in s to two hex digits.
-   *
+   * Converts every character in s to two hex digits.
    */
   private def hex(str: UTF8String): UTF8String = {
     if (str == null) {
diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MathFunctionsSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MathFunctionsSuite.scala
index a854cb5677a1c..eed59de344b46 100644
--- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MathFunctionsSuite.scala
+++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MathFunctionsSuite.scala
@@ -17,10 +17,9 @@
 
 package org.apache.spark.sql.catalyst.expressions
 
-import org.apache.spark.sql.catalyst.dsl.expressions._
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.sql.catalyst.dsl.expressions._
-import org.apache.spark.sql.types.{IntegerType, DataType, DoubleType, LongType}
+import org.apache.spark.sql.types.{DataType, DoubleType, LongType}
 
 class MathFunctionsSuite extends SparkFunSuite with ExpressionEvalHelper {
 
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/functions.scala b/sql/core/src/main/scala/org/apache/spark/sql/functions.scala
index bfc029428385b..3a08d6568fb5d 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/functions.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/functions.scala
@@ -1047,7 +1047,7 @@ object functions {
   def floor(columnName: String): Column = floor(Column(columnName))
 
   /**
-   * Computes hex value of the given input
+   * Computes hex value of the given column
    *
    * @group math_funcs
    * @since 1.5.0