diff --git a/include/qpdf/QPDF.hh b/include/qpdf/QPDF.hh
index 863650a..75cc238 100644
--- a/include/qpdf/QPDF.hh
+++ b/include/qpdf/QPDF.hh
@@ -791,7 +791,6 @@ class QPDF
 
     class Doc;
     class Writer;
-    class Resolver;
     class StreamCopier;
     class Pipe;
     class JobSetter;
diff --git a/libqpdf/qpdf/QPDFObjectHandle_private.hh b/libqpdf/qpdf/QPDFObjectHandle_private.hh
index 41a1eef..b16232f 100644
--- a/libqpdf/qpdf/QPDFObjectHandle_private.hh
+++ b/libqpdf/qpdf/QPDFObjectHandle_private.hh
@@ -577,7 +577,7 @@ namespace qpdf
             return &std::get<T>(obj->value);
         }
         if (std::holds_alternative<QPDF_Unresolved>(obj->value)) {
-            return BaseHandle(QPDF::Resolver::resolved(obj->qpdf, obj->og)).as<T>();
+            return BaseHandle(QPDF::Doc::Resolver::resolved(obj->qpdf, obj->og)).as<T>();
         }
         if (std::holds_alternative<QPDF_Reference>(obj->value)) {
             // see comment in QPDF_Reference.
@@ -676,7 +676,7 @@ namespace qpdf
             return ::ot_uninitialized;
         }
         if (raw_type_code() == ::ot_unresolved) {
-            return QPDF::Resolver::resolved(obj->qpdf, obj->og)->getTypeCode();
+            return QPDF::Doc::Resolver::resolved(obj->qpdf, obj->og)->getTypeCode();
         }
         return raw_type_code();
     }
@@ -688,7 +688,7 @@ namespace qpdf
             return ::ot_uninitialized;
         }
         if (raw_type_code() == ::ot_unresolved) {
-            return QPDF::Resolver::resolved(obj->qpdf, obj->og)->getTypeCode();
+            return QPDF::Doc::Resolver::resolved(obj->qpdf, obj->og)->getTypeCode();
         }
         if (raw_type_code() == ::ot_reference) {
             return std::get<QPDF_Reference>(obj->value).obj->getTypeCode();
@@ -728,7 +728,7 @@ inline qpdf_object_type_e
 QPDFObject::getResolvedTypeCode() const
 {
     if (getTypeCode() == ::ot_unresolved) {
-        return QPDF::Resolver::resolved(qpdf, og)->getTypeCode();
+        return QPDF::Doc::Resolver::resolved(qpdf, og)->getTypeCode();
     }
     if (getTypeCode() == ::ot_reference) {
         return std::get<QPDF_Reference>(value).obj->getTypeCode();
diff --git a/libqpdf/qpdf/QPDF_private.hh b/libqpdf/qpdf/QPDF_private.hh
index 69943f0..e92faf3 100644
--- a/libqpdf/qpdf/QPDF_private.hh
+++ b/libqpdf/qpdf/QPDF_private.hh
@@ -13,21 +13,6 @@
 
 using namespace qpdf;
 
-// The Resolver class is restricted to QPDFObject so that only it can resolve indirect
-// references.
-class QPDF::Resolver
-{
-    friend class QPDFObject;
-    friend class qpdf::BaseHandle;
-
-  private:
-    static std::shared_ptr<QPDFObject> const&
-    resolved(QPDF* qpdf, QPDFObjGen og)
-    {
-        return qpdf->resolve(og);
-    }
-};
-
 // StreamCopier class is restricted to QPDFObjectHandle so it can copy stream data.
 class QPDF::StreamCopier
 {
@@ -383,6 +368,7 @@ class QPDF::Doc
 {
   public:
     class ParseGuard;
+    class Resolver;
 
     Doc() = delete;
     Doc(Doc const&) = delete;
@@ -540,6 +526,21 @@ class QPDF::Members
     std::map<QPDFObjGen, std::set<ObjUser>> object_to_obj_users;
 };
 
+// The Resolver class is restricted to QPDFObject and BaseHandle so that only it can resolve
+// indirect references.
+class QPDF::Doc::Resolver
+{
+    friend class QPDFObject;
+    friend class qpdf::BaseHandle;
+
+  private:
+    static std::shared_ptr<QPDFObject> const&
+    resolved(QPDF* qpdf, QPDFObjGen og)
+    {
+        return qpdf->resolve(og);
+    }
+};
+
 // JobSetter class is restricted to QPDFJob.
 class QPDF::JobSetter
 {