diff --git a/plugin/src/test/java/org/opensearch/ml/rest/RestMLRemoteInferenceIT.java b/plugin/src/test/java/org/opensearch/ml/rest/RestMLRemoteInferenceIT.java
index d9a590572b..59c2cc5fdd 100644
--- a/plugin/src/test/java/org/opensearch/ml/rest/RestMLRemoteInferenceIT.java
+++ b/plugin/src/test/java/org/opensearch/ml/rest/RestMLRemoteInferenceIT.java
@@ -10,7 +10,6 @@
 import java.util.Map;
 import java.util.function.Consumer;
 
-import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpHeaders;
 import org.apache.http.message.BasicHeader;
@@ -476,14 +475,6 @@ public void testOpenAITextEmbeddingModel_UTF8() throws IOException, InterruptedE
         }, null);
     }
 
-    public void testOpenAITextEmbeddingModel_ISO8859_1() throws IOException, InterruptedException {
-        testOpenAITextEmbeddingModel("ISO-8859-1", null, (exception) -> {
-            assertTrue(exception instanceof org.opensearch.client.ResponseException);
-            String stackTrace = ExceptionUtils.getStackTrace(exception);
-            assertTrue(stackTrace.contains("'utf-8' codec can't decode byte 0xeb"));
-        });
-    }
-
     private void testOpenAITextEmbeddingModel(String charset, Consumer<Map> verifyResponse, Consumer<Exception> verifyException)
         throws IOException,
         InterruptedException {