diff --git a/packages/sanity/src/core/config/prepareConfig.ts b/packages/sanity/src/core/config/prepareConfig.ts
index abc5b3d7bda4..db2f1ebb5658 100644
--- a/packages/sanity/src/core/config/prepareConfig.ts
+++ b/packages/sanity/src/core/config/prepareConfig.ts
@@ -513,7 +513,7 @@ function resolveSource({
           return documentCommentsEnabledReducer({
             context: partialContext,
             config,
-            initialValue: true,
+            initialValue: false,
           })
         },
       },