diff --git a/src/test/java/com/amazon/ion/system/IonSystemBuilderTest.java b/src/test/java/com/amazon/ion/system/IonSystemBuilderTest.java
index f8594646da..6e0379f275 100644
--- a/src/test/java/com/amazon/ion/system/IonSystemBuilderTest.java
+++ b/src/test/java/com/amazon/ion/system/IonSystemBuilderTest.java
@@ -159,7 +159,7 @@ public void testIonBinaryWriterBuilder()
         assertSame(binaryWriterBuilder, systemBuilder.getIonBinaryWriterBuilder());
 
         IonCatalog systemCatalog = new SimpleCatalog();
-        IonSystem system = systemBuilder.build();
+        IonSystem system = systemBuilder.withCatalog(systemCatalog).build();
         assertSame(systemCatalog, system.getCatalog());
     }
 
@@ -173,7 +173,7 @@ public void testIonReaderBuilder()
         assertSame(readerBuilder, systemBuilder.getReaderBuilder());
 
         IonCatalog systemCatalog = new SimpleCatalog();
-        IonSystem system = systemBuilder.build();
+        IonSystem system = systemBuilder.withCatalog(systemCatalog).build();
         assertSame(systemCatalog, system.getCatalog());
     }