diff --git a/modules/juce_graphics/geometry/juce_Rectangle.h b/modules/juce_graphics/geometry/juce_Rectangle.h
index 53b420ada6..6c833c9766 100644
--- a/modules/juce_graphics/geometry/juce_Rectangle.h
+++ b/modules/juce_graphics/geometry/juce_Rectangle.h
@@ -678,7 +678,7 @@ public:
     /** Clips a rectangle so that it lies only within this one.
         Returns false if the two rectangles didn't overlap.
     */
-    bool intersectRectangle (Rectangle<ValueType> rectangleToClip) const noexcept
+    bool intersectRectangle (Rectangle<ValueType>& rectangleToClip) const noexcept
     {
         return intersectRectangle (rectangleToClip.pos.x, rectangleToClip.pos.y,
                                    rectangleToClip.w,     rectangleToClip.h);
diff --git a/modules/juce_graphics/geometry/juce_RectangleList.h b/modules/juce_graphics/geometry/juce_RectangleList.h
index f6e0b993d5..81bd2f5eea 100644
--- a/modules/juce_graphics/geometry/juce_RectangleList.h
+++ b/modules/juce_graphics/geometry/juce_RectangleList.h
@@ -386,7 +386,7 @@ public:
         destRegion.clear();
 
         if (! rect.isEmpty())
-            for (auto& r : rects)
+            for (auto r : rects)
                 if (rect.intersectRectangle (r))
                     destRegion.rects.add (r);