diff --git a/src/generic/odcombo.cpp b/src/generic/odcombo.cpp
index 1d912e19c0..83dc7cbb95 100644
--- a/src/generic/odcombo.cpp
+++ b/src/generic/odcombo.cpp
@@ -760,6 +760,11 @@ wxSize wxVListBoxComboPopup::GetAdjustedSize( int minWidth, int prefHeight, int
             height = maxHeight;
 
         int totalHeight = GetTotalHeight(); // + 3;
+
+        // Take borders into account on Mac or scrollbars always appear
+#if defined(__WXMAC__)
+        totalHeight += 2;
+#endif
         if ( height >= totalHeight )
         {
             height = totalHeight;