diff --git a/modules/juce_audio_processors/utilities/juce_AAXClientExtensions.h b/modules/juce_audio_processors/utilities/juce_AAXClientExtensions.h
index cb95c6a56d..7612af9194 100644
--- a/modules/juce_audio_processors/utilities/juce_AAXClientExtensions.h
+++ b/modules/juce_audio_processors/utilities/juce_AAXClientExtensions.h
@@ -45,7 +45,7 @@ namespace juce
 
     @tags{Audio}
 */
-struct AAXClientExtensions
+struct JUCE_API AAXClientExtensions
 {
     virtual ~AAXClientExtensions() = default;
 
diff --git a/modules/juce_gui_basics/detail/juce_ScopedContentSharerImpl.h b/modules/juce_gui_basics/detail/juce_ScopedContentSharerImpl.h
index ae121b13ef..a400bd694a 100644
--- a/modules/juce_gui_basics/detail/juce_ScopedContentSharerImpl.h
+++ b/modules/juce_gui_basics/detail/juce_ScopedContentSharerImpl.h
@@ -36,7 +36,7 @@ namespace juce::detail
 {
 
 class ConcreteScopedContentSharerImpl : public ScopedMessageBoxImpl,
-                                        private AsyncUpdater
+                                        public AsyncUpdater
 {
 public:
     static ScopedMessageBox show (std::unique_ptr<ScopedContentSharerInterface>&& native,
diff --git a/modules/juce_gui_basics/detail/juce_ScopedContentSharerInterface.h b/modules/juce_gui_basics/detail/juce_ScopedContentSharerInterface.h
index 7cb85d6fe2..1c69af842a 100644
--- a/modules/juce_gui_basics/detail/juce_ScopedContentSharerInterface.h
+++ b/modules/juce_gui_basics/detail/juce_ScopedContentSharerInterface.h
@@ -73,7 +73,7 @@ struct ScopedContentSharerInterface
 };
 
 class TemporaryFilesDecorator : public ScopedContentSharerInterface,
-                                private AsyncUpdater
+                                public AsyncUpdater
 {
 public:
     explicit TemporaryFilesDecorator (Component* parentIn)
diff --git a/modules/juce_gui_basics/detail/juce_ScopedMessageBoxImpl.h b/modules/juce_gui_basics/detail/juce_ScopedMessageBoxImpl.h
index c26e13ea6a..d83f1519f2 100644
--- a/modules/juce_gui_basics/detail/juce_ScopedMessageBoxImpl.h
+++ b/modules/juce_gui_basics/detail/juce_ScopedMessageBoxImpl.h
@@ -45,7 +45,7 @@ public:
 
 //==============================================================================
 class ConcreteScopedMessageBoxImpl : public ScopedMessageBoxImpl,
-                                     private AsyncUpdater
+                                     public AsyncUpdater
 {
 public:
     static ScopedMessageBox show (std::unique_ptr<ScopedMessageBoxInterface>&& native,