diff --git a/include/wx/vscroll.h b/include/wx/vscroll.h
index f5b0a2fc5b..e138586233 100644
--- a/include/wx/vscroll.h
+++ b/include/wx/vscroll.h
@@ -351,7 +351,7 @@ protected:
 
     // forward calls to OnGetRowsHeightHint()
     virtual void OnGetUnitsSizeHint(size_t unitMin, size_t unitMax) const
-        { return OnGetRowsHeightHint(unitMin, unitMax); }
+        { OnGetRowsHeightHint(unitMin, unitMax); }
 
     // again, if not overridden, it will fall back on default method
     virtual wxCoord EstimateTotalHeight() const