diff --git a/src/lib/output/themes/DefaultTheme.ts b/src/lib/output/themes/DefaultTheme.ts
index f252d5d27..15a4c662e 100644
--- a/src/lib/output/themes/DefaultTheme.ts
+++ b/src/lib/output/themes/DefaultTheme.ts
@@ -392,43 +392,24 @@ export class NavigationBuilder {
         if (modules.length < 10) {
             this.buildGroups(modules, root);
         } else {
-            this.buildGroups(this.entryPoint.getChildrenByKind(ReflectionKind.SomeModule), root, this.buildChildren);
+            this.buildGroups(this.entryPoint.getChildrenByKind(ReflectionKind.SomeModule), root, true);
         }
 
         return root;
     }
 
-    /**
-     * Create navigation nodes for all container children of the given reflection.
-     *
-     * @param reflection  The reflection whose children modules should be transformed into navigation nodes.
-     * @param parent      The parent NavigationItem of the newly created nodes.
-     */
-    protected buildChildren(reflection: DeclarationReflection, parent: NavigationItem) {
-        const modules = reflection.getChildrenByKind(ReflectionKind.SomeModule);
-        modules.sort((a: DeclarationReflection, b: DeclarationReflection) => {
-            return a.getFullName() < b.getFullName() ? -1 : 1;
-        });
-
-        modules.forEach((reflection) => {
-            const item = NavigationItem.create(reflection, parent);
-            this.includeDedicatedUrls(reflection, item);
-            this.buildChildren(reflection, item);
-        });
-    }
-
     /**
      * Create navigation nodes for the given list of reflections. The resulting nodes will be grouped into
      * an "internal" and an "external" section when applicable.
      *
      * @param reflections  The list of reflections which should be transformed into navigation nodes.
      * @param parent       The parent NavigationItem of the newly created nodes.
-     * @param callback     Optional callback invoked for each generated node.
+     * @param buildChildren Whether navigation nodes should also be built for the children of each reflection.
      */
     protected buildGroups(
         reflections: DeclarationReflection[],
         parent: NavigationItem,
-        callback?: (reflection: DeclarationReflection, item: NavigationItem) => void
+        buildChildren: boolean = false
     ) {
         let state = -1;
         const hasExternals = this.containsExternals(reflections);
@@ -445,12 +426,31 @@ export class NavigationBuilder {
 
             const item = NavigationItem.create(reflection, parent);
             this.includeDedicatedUrls(reflection, item);
-            if (callback) {
-                callback(reflection, item);
+            if (buildChildren) {
+                this.buildChildren(reflection, item);
             }
         });
     }
 
+    /**
+     * Create navigation nodes for all container children of the given reflection.
+     *
+     * @param reflection  The reflection whose children modules should be transformed into navigation nodes.
+     * @param parent      The parent NavigationItem of the newly created nodes.
+     */
+    protected buildChildren(reflection: DeclarationReflection, parent: NavigationItem) {
+        const modules = reflection.getChildrenByKind(ReflectionKind.SomeModule);
+        modules.sort((a: DeclarationReflection, b: DeclarationReflection) => {
+            return a.getFullName() < b.getFullName() ? -1 : 1;
+        });
+
+        modules.forEach((reflection) => {
+            const item = NavigationItem.create(reflection, parent);
+            this.includeDedicatedUrls(reflection, item);
+            this.buildChildren(reflection, item);
+        });
+    }
+
     /**
      * Test whether the given list of modules contains an external module.
      *