diff --git a/server/src/main/java/org/elasticsearch/cluster/metadata/ProjectId.java b/server/src/main/java/org/elasticsearch/cluster/metadata/ProjectId.java
index 2363f9efa2b36..0d1a07943fe04 100644
--- a/server/src/main/java/org/elasticsearch/cluster/metadata/ProjectId.java
+++ b/server/src/main/java/org/elasticsearch/cluster/metadata/ProjectId.java
@@ -54,7 +54,7 @@ public static ProjectId fromId(String id) {
         }
     }
 
-    static boolean isValidFormatId(String id) {
+    public static boolean isValidFormatId(String id) {
         if (id.length() > MAX_LENGTH) {
             return false;
         }