diff --git a/core/src/test/java/org/bitcoinj/core/UtilsTest.java b/core/src/test/java/org/bitcoinj/core/UtilsTest.java
index ec507a282..47f53ff14 100644
--- a/core/src/test/java/org/bitcoinj/core/UtilsTest.java
+++ b/core/src/test/java/org/bitcoinj/core/UtilsTest.java
@@ -237,5 +237,6 @@ public class UtilsTest {
     public void testRollMockClock() {
         Utils.setMockClock(25200);
         assertEquals(new Date("Thu Jan 01 07:00:08 GMT 1970"), Utils.rollMockClock(8));
+        Utils.resetMocking();
     }
 }