diff --git a/buildSrc/src/test/java/org/opensearch/gradle/JdkDownloadPluginTests.java b/buildSrc/src/test/java/org/opensearch/gradle/JdkDownloadPluginTests.java
index 4dcc65cca4c62..ad17032e718d2 100644
--- a/buildSrc/src/test/java/org/opensearch/gradle/JdkDownloadPluginTests.java
+++ b/buildSrc/src/test/java/org/opensearch/gradle/JdkDownloadPluginTests.java
@@ -108,7 +108,7 @@ public void testUnknownArchitecture() {
             "11.0.2+33",
             "linux",
             "unknown",
-            "unknown architecture [unknown] for jdk [testjdk], must be one of [aarch64, x64]"
+            "unknown architecture [unknown] for jdk [testjdk], must be one of [aarch64, x64, s390x]"
         );
     }