diff --git a/javatests/com/google/gitiles/MoreAssert.java b/javatests/com/google/gitiles/MoreAssert.java
index 3f79874..3814be5 100644
--- a/javatests/com/google/gitiles/MoreAssert.java
+++ b/javatests/com/google/gitiles/MoreAssert.java
@@ -15,13 +15,10 @@
 
 /** Assertion methods for Gitiles. */
 public class MoreAssert {
-  private MoreAssert() {}
-
   /** Simple version of assertThrows that will be introduced in JUnit 4.13. */
   public static <T extends Throwable> T assertThrows(Class<T> expected, ThrowingRunnable r) {
     try {
       r.run();
-      throw new AssertionError("Expected " + expected.getSimpleName() + " to be thrown");
     } catch (Throwable actual) {
       if (expected.isAssignableFrom(actual.getClass())) {
         @SuppressWarnings("unchecked")
@@ -32,9 +29,12 @@
           "Expected " + expected.getSimpleName() + ", but got " + actual.getClass().getSimpleName(),
           actual);
     }
+    throw new AssertionError("Expected " + expected.getSimpleName() + " to be thrown");
   }
 
   public interface ThrowingRunnable {
     void run() throws Throwable;
   }
+
+  private MoreAssert() {}
 }