diff --git a/interface/wx/filedlg.h b/interface/wx/filedlg.h
index 3be2c15429..cd53f73e22 100644
--- a/interface/wx/filedlg.h
+++ b/interface/wx/filedlg.h
@@ -236,10 +236,11 @@ public:
         control to update its state depending on the currently selected file
         type filter.
 
-        Currently this function is fully implemented only under MSW and
+        Currently this function is fully implemented under macOS and MSW and
         always returns @c wxNOT_FOUND elsewhere.
 
-        @since 3.1.3
+        @since 3.1.3 - MSW
+        @since 3.1.5 - macOS
 
         @return The 0-based index of the currently selected file type filter or
             wxNOT_FOUND if nothing is selected.
diff --git a/src/osx/cocoa/filedlg.mm b/src/osx/cocoa/filedlg.mm
index dabb77f4a8..3a5fecae72 100644
--- a/src/osx/cocoa/filedlg.mm
+++ b/src/osx/cocoa/filedlg.mm
@@ -295,6 +295,10 @@ void wxFileDialog::DoOnFilterSelected(int index)
     NSArray* types = GetTypesFromExtension(m_filterExtensions[index],m_currentExtensions);
     NSSavePanel* panel = (NSSavePanel*) GetWXWindow();
     [panel setAllowedFileTypes:types];
+
+    m_currentlySelectedFilterIndex = index;
+
+    UpdateExtraControlUI();
 }
 
 // An item has been selected in the file filter wxChoice: