diff --git a/server/src/main/java/org/elasticsearch/indices/flush/SyncedFlushService.java b/server/src/main/java/org/elasticsearch/indices/flush/SyncedFlushService.java
index 65bacd94910..b8b294a90d4 100644
--- a/server/src/main/java/org/elasticsearch/indices/flush/SyncedFlushService.java
+++ b/server/src/main/java/org/elasticsearch/indices/flush/SyncedFlushService.java
@@ -561,19 +561,11 @@ public class SyncedFlushService extends AbstractComponent implements IndexEventL
         }
 
         boolean includeNumDocs(Version version) {
-            if (version.major == Version.V_5_6_8.major) {
-                return version.onOrAfter(Version.V_5_6_8);
-            } else {
-                return version.onOrAfter(Version.V_6_2_2);
-            }
+            return version.onOrAfter(Version.V_5_6_8);
         }
 
         boolean includeExistingSyncId(Version version) {
-            if (version.major == Version.V_5_6_9.major) {
-                return version.onOrAfter(Version.V_5_6_9);
-            } else {
-                return version.onOrAfter(Version.V_6_3_0);
-            }
+            return version.onOrAfter(Version.V_5_6_9);
         }
 
         @Override