diff --git a/mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala b/mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
index 7e0bc19a7aeb462c1ef546250c4a2fec65d87a6e..9f60f0896ec52b35fdf848ad222767b4901a4520 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
@@ -81,7 +81,7 @@ class DecisionTreeClassifier @Since("1.4.0") (
    * E.g. 10 means that the cache will get checkpointed every 10 iterations.
    * This is only used if cacheNodeIds is true and if the checkpoint directory is set in
    * [[org.apache.spark.SparkContext]].
-   * Must be >= 1.
+   * Must be at least 1.
    * (default = 10)
    * @group setParam
    */
diff --git a/mllib/src/main/scala/org/apache/spark/ml/classification/GBTClassifier.scala b/mllib/src/main/scala/org/apache/spark/ml/classification/GBTClassifier.scala
index c5fc3c87729087a83fb491bf12876473edcbcebf..c99b63b25d2e708c58b4c5fe91120c67d60c739e 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/classification/GBTClassifier.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/classification/GBTClassifier.scala
@@ -98,7 +98,7 @@ class GBTClassifier @Since("1.4.0") (
    * E.g. 10 means that the cache will get checkpointed every 10 iterations.
    * This is only used if cacheNodeIds is true and if the checkpoint directory is set in
    * [[org.apache.spark.SparkContext]].
-   * Must be >= 1.
+   * Must be at least 1.
    * (default = 10)
    * @group setParam
    */
diff --git a/mllib/src/main/scala/org/apache/spark/ml/classification/RandomForestClassifier.scala b/mllib/src/main/scala/org/apache/spark/ml/classification/RandomForestClassifier.scala
index 34c055dce651186228b303b5469d902eb1c7e53a..5bbaafeff329fd955e462659fc5cff1828de343e 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/classification/RandomForestClassifier.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/classification/RandomForestClassifier.scala
@@ -83,7 +83,7 @@ class RandomForestClassifier @Since("1.4.0") (
    * E.g. 10 means that the cache will get checkpointed every 10 iterations.
    * This is only used if cacheNodeIds is true and if the checkpoint directory is set in
    * [[org.apache.spark.SparkContext]].
-   * Must be >= 1.
+   * Must be at least 1.
    * (default = 10)
    * @group setParam
    */
diff --git a/mllib/src/main/scala/org/apache/spark/ml/regression/DecisionTreeRegressor.scala b/mllib/src/main/scala/org/apache/spark/ml/regression/DecisionTreeRegressor.scala
index 0cdfa7b0b742ac480c604ec22fe95b2eb53ab838..01c5cc1c7efa9941fca48647ab172fe72f89cfeb 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/regression/DecisionTreeRegressor.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/regression/DecisionTreeRegressor.scala
@@ -80,7 +80,7 @@ class DecisionTreeRegressor @Since("1.4.0") (@Since("1.4.0") override val uid: S
    * E.g. 10 means that the cache will get checkpointed every 10 iterations.
    * This is only used if cacheNodeIds is true and if the checkpoint directory is set in
    * [[org.apache.spark.SparkContext]].
-   * Must be >= 1.
+   * Must be at least 1.
    * (default = 10)
    * @group setParam
    */
diff --git a/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala b/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala
index 49a3f8b6b5152732adfe34a2130c25dad8309ee0..f8ab3d3a45a49129e5537b7fea90d22c2cc64ffa 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala
@@ -95,7 +95,7 @@ class GBTRegressor @Since("1.4.0") (@Since("1.4.0") override val uid: String)
    * E.g. 10 means that the cache will get checkpointed every 10 iterations.
    * This is only used if cacheNodeIds is true and if the checkpoint directory is set in
    * [[org.apache.spark.SparkContext]].
-   * Must be >= 1.
+   * Must be at least 1.
    * (default = 10)
    * @group setParam
    */
diff --git a/mllib/src/main/scala/org/apache/spark/ml/regression/RandomForestRegressor.scala b/mllib/src/main/scala/org/apache/spark/ml/regression/RandomForestRegressor.scala
index 67fb648625550816388ef6c0176220520493a0a9..ca4a50b825dde44f7c1a5245e3a38bc6ed75a529 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/regression/RandomForestRegressor.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/regression/RandomForestRegressor.scala
@@ -82,7 +82,7 @@ class RandomForestRegressor @Since("1.4.0") (@Since("1.4.0") override val uid: S
    * E.g. 10 means that the cache will get checkpointed every 10 iterations.
    * This is only used if cacheNodeIds is true and if the checkpoint directory is set in
    * [[org.apache.spark.SparkContext]].
-   * Must be >= 1.
+   * Must be at least 1.
    * (default = 10)
    * @group setParam
    */