diff --git a/core/src/test/java/org/jclouds/cache/internal/BackoffExponentiallyAndRetryOnThrowableCallableTest.java b/core/src/test/java/org/jclouds/cache/internal/BackoffExponentiallyAndRetryOnThrowableCallableTest.java
index 484cea707f..4e370a6109 100644
--- a/core/src/test/java/org/jclouds/cache/internal/BackoffExponentiallyAndRetryOnThrowableCallableTest.java
+++ b/core/src/test/java/org/jclouds/cache/internal/BackoffExponentiallyAndRetryOnThrowableCallableTest.java
@@ -31,7 +31,7 @@ import org.jclouds.rest.ResourceNotFoundException;
 import org.testng.annotations.BeforeMethod;
 import org.testng.annotations.Test;
 
-@Test(groups = "unit", testName = "BackoffExponentiallyAndRetryOnThrowableCallableTest")
+@Test(groups = "unit", testName = "BackoffExponentiallyAndRetryOnThrowableCallableTest", singleThreaded = true)
 public class BackoffExponentiallyAndRetryOnThrowableCallableTest {
    private Callable<String> mock;
 
@@ -72,4 +72,4 @@ public class BackoffExponentiallyAndRetryOnThrowableCallableTest {
       }
       verify(mock);
    }
-}
\ No newline at end of file
+}