diff --git a/gax-java/gax/src/test/java/com/google/api/gax/rpc/EndpointContextTest.java b/gax-java/gax/src/test/java/com/google/api/gax/rpc/EndpointContextTest.java
index d64f936aaf..6e2f581a79 100644
--- a/gax-java/gax/src/test/java/com/google/api/gax/rpc/EndpointContextTest.java
+++ b/gax-java/gax/src/test/java/com/google/api/gax/rpc/EndpointContextTest.java
@@ -54,7 +54,8 @@ class EndpointContextTest {
   private EndpointContext.Builder defaultEndpointContextBuilder;
   private StatusCode statusCode;
 
-  @SystemStub private final EnvironmentVariables environmentVariables = new EnvironmentVariables();
+  @SystemStub
+  private static final EnvironmentVariables environmentVariables = new EnvironmentVariables();
 
   @BeforeEach
   void setUp() throws IOException {