diff --git a/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/enumerated/RemoveFilter.scala b/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/enumerated/RemoveFilter.scala
index a3b4831a622d..55b29cd56ff1 100644
--- a/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/enumerated/RemoveFilter.scala
+++ b/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/enumerated/RemoveFilter.scala
@@ -54,12 +54,12 @@ object RemoveFilter extends RasRule[SparkPlan] {
         leaf(clazz(classOf[BasicScanExecTransformer]))
       ).build())
 
-  // A noop filter placeholder that indicates that all conditions are pushed into scan.
+  // A noop filter placeholder that indicates that all conditions are pushed down to scan.
   //
   // This operator has zero cost in cost model to avoid planner from choosing the
   // original filter-scan that doesn't have all conditions pushed down to scan.
   //
-  // We cannot simplify remove the filter to let planner choose the scan since by vanilla
+  // We cannot simply remove the filter to let planner choose the pushed scan since by vanilla
   // Spark's definition the filter may have different output nullability than scan. So
   // we have to keep this empty filter to let the optimized tree have the identical output schema
   // with the original tree. If we simply remove the filter, possible UBs might be caused. For
diff --git a/gluten-core/src/main/scala/org/apache/gluten/planner/cost/GlutenCostModel.scala b/gluten-core/src/main/scala/org/apache/gluten/planner/cost/GlutenCostModel.scala
index 4b5fa6803eec..c45314a9f58f 100644
--- a/gluten-core/src/main/scala/org/apache/gluten/planner/cost/GlutenCostModel.scala
+++ b/gluten-core/src/main/scala/org/apache/gluten/planner/cost/GlutenCostModel.scala
@@ -80,7 +80,7 @@ object GlutenCostModel extends Logging {
           // by vanilla Spark and was generated by strategy "JoinSelectionOverrides"
           infLongCost
         case _: RemoveFilter.NoopFilter =>
-          // To make planner  choose the tree that has applied rule PushFilterToScan.
+          // To make planner choose the tree that has applied rule PushFilterToScan.
           0L
         case ColumnarToRowExec(child) => 3L
         case RowToColumnarExec(child) => 3L
diff --git a/shims/common/src/main/scala/org/apache/gluten/GlutenConfig.scala b/shims/common/src/main/scala/org/apache/gluten/GlutenConfig.scala
index 9db063a6623f..d353c75c3a51 100644
--- a/shims/common/src/main/scala/org/apache/gluten/GlutenConfig.scala
+++ b/shims/common/src/main/scala/org/apache/gluten/GlutenConfig.scala
@@ -1209,7 +1209,7 @@ object GlutenConfig {
   val RAS_COST_MODEL =
     buildConf("spark.gluten.ras.costModel")
       .doc(
-        "Experimental: The classpath of user-defined cost model that will be used by RAS. " +
+        "Experimental: The class name of user-defined cost model that will be used by RAS. " +
           "If not specified, a rough built-in cost model will be used.")
       .stringConf
       .createWithDefaultString("rough")