diff --git a/javatests/google/registry/tools/CommandTestCase.java b/javatests/google/registry/tools/CommandTestCase.java
index 8036682a0..6a682acdd 100644
--- a/javatests/google/registry/tools/CommandTestCase.java
+++ b/javatests/google/registry/tools/CommandTestCase.java
@@ -174,7 +174,7 @@ public abstract class CommandTestCase<C extends Command> {
     }
   }
 
-  void assertNotInStdout(String expected) throws Exception {
+  protected void assertNotInStdout(String expected) throws Exception {
     assertThat(getStdoutAsString()).doesNotContain(expected);
   }