diff --git a/server/src/main/java/org/opensearch/index/query/functionscore/ScoreFunctionBuilder.java b/server/src/main/java/org/opensearch/index/query/functionscore/ScoreFunctionBuilder.java
index 48b4f29ea8dcc..4987f260bc9b4 100644
--- a/server/src/main/java/org/opensearch/index/query/functionscore/ScoreFunctionBuilder.java
+++ b/server/src/main/java/org/opensearch/index/query/functionscore/ScoreFunctionBuilder.java
@@ -60,7 +60,7 @@ public ScoreFunctionBuilder() {}
      */
     public ScoreFunctionBuilder(StreamInput in) throws IOException {
         weight = checkWeight(in.readOptionalFloat());
-        if (in.getVersion().onOrAfter(Version.V_2_0_0)) {
+        if (in.getVersion().onOrAfter(Version.V_1_3_0)) {
             functionName = in.readOptionalString();
         }
     }
@@ -68,7 +68,7 @@ public ScoreFunctionBuilder(StreamInput in) throws IOException {
     @Override
     public final void writeTo(StreamOutput out) throws IOException {
         out.writeOptionalFloat(weight);
-        if (out.getVersion().onOrAfter(Version.V_2_0_0)) {
+        if (out.getVersion().onOrAfter(Version.V_1_3_0)) {
             out.writeOptionalString(functionName);
         }
         doWriteTo(out);