diff --git a/modules/juce_gui_basics/windows/juce_CallOutBox.cpp b/modules/juce_gui_basics/windows/juce_CallOutBox.cpp
index d9f4cf28da..9b877fee5a 100644
--- a/modules/juce_gui_basics/windows/juce_CallOutBox.cpp
+++ b/modules/juce_gui_basics/windows/juce_CallOutBox.cpp
@@ -23,7 +23,7 @@
 */
 
 CallOutBox::CallOutBox (Component& c, const Rectangle<int>& area, Component* const parent)
-    : borderSpace (20), arrowSize (16.0f), content (c)
+    : arrowSize (16.0f), content (c)
 {
     addAndMakeVisible (content);
 
@@ -86,10 +86,14 @@ CallOutBox& CallOutBox::launchAsynchronously (Component* content, const Rectangl
 void CallOutBox::setArrowSize (const float newSize)
 {
     arrowSize = newSize;
-    borderSpace = jmax (20, (int) arrowSize);
     refreshPath();
 }
 
+int CallOutBox::getBorderSize() const noexcept
+{
+    return jmax (20, (int) arrowSize);
+}
+
 void CallOutBox::paint (Graphics& g)
 {
     getLookAndFeel().drawCallOutBoxBackground (*this, g, outline, background);
@@ -97,6 +101,7 @@ void CallOutBox::paint (Graphics& g)
 
 void CallOutBox::resized()
 {
+    const int borderSpace = getBorderSize();
     content.setTopLeftPosition (borderSpace, borderSpace);
     refreshPath();
 }
@@ -168,6 +173,8 @@ void CallOutBox::updatePosition (const Rectangle<int>& newAreaToPointTo, const R
     targetArea = newAreaToPointTo;
     availableArea = newAreaToFitIn;
 
+    const int borderSpace = getBorderSize();
+
     Rectangle<int> newBounds (content.getWidth()  + borderSpace * 2,
                               content.getHeight() + borderSpace * 2);
 
diff --git a/modules/juce_gui_basics/windows/juce_CallOutBox.h b/modules/juce_gui_basics/windows/juce_CallOutBox.h
index 51be2f3e8b..a87a52cfbb 100644
--- a/modules/juce_gui_basics/windows/juce_CallOutBox.h
+++ b/modules/juce_gui_basics/windows/juce_CallOutBox.h
@@ -149,10 +149,11 @@ public:
     bool keyPressed (const KeyPress&) override;
     /** @internal */
     void handleCommandMessage (int) override;
+    /** @internal */
+    int getBorderSize() const noexcept;
 
 private:
     //==============================================================================
-    int borderSpace;
     float arrowSize;
     Component& content;
     Path outline;