diff --git a/src/main/java/com/google/devtools/build/lib/query2/query/output/OutputFormatters.java b/src/main/java/com/google/devtools/build/lib/query2/query/output/OutputFormatters.java
index dbc0504fe171e5..bfae1e39a3e70b 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/query/output/OutputFormatters.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/query/output/OutputFormatters.java
@@ -37,6 +37,7 @@ public static ImmutableList<OutputFormatter> getDefaultFormatters() {
         new LocationOutputFormatter(),
         new GraphOutputFormatter(),
         new XmlOutputFormatter(),
+        new JsonOutputFormatter(),
         new ProtoOutputFormatter(),
         new StreamedProtoOutputFormatter());
   }