diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/job/config/AnalysisConfig.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/job/config/AnalysisConfig.java
index e3b86704d0e73..9087e8227f081 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/job/config/AnalysisConfig.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/job/config/AnalysisConfig.java
@@ -138,7 +138,7 @@ public AnalysisConfig(StreamInput in) throws IOException {
 
         // BWC for result_finalization_window and overlapping_buckets
         // TODO Remove in 7.0.0
-        if (in.getVersion().before(Version.CURRENT)) {//setting to current before backport
+        if (in.getVersion().before(Version.V_6_6_0)) {
             in.readOptionalBoolean();
             in.readOptionalLong();
         }
@@ -182,7 +182,7 @@ public void writeTo(StreamOutput out) throws IOException {
 
         // BWC for result_finalization_window and overlapping_buckets
         // TODO Remove in 7.0.0
-        if (out.getVersion().before(Version.CURRENT)) { //setting to current before backport
+        if (out.getVersion().before(Version.V_6_6_0)) {
             out.writeOptionalBoolean(null);
             out.writeOptionalLong(null);
         }