diff --git a/ui.h b/ui.h
index 00419a11..e1a540cc 100644
--- a/ui.h
+++ b/ui.h
@@ -139,6 +139,7 @@ _UI_EXTERN void uiButtonSetText(uiButton *b, const char *text);
 _UI_EXTERN void uiButtonOnClicked(uiButton *b, void (*f)(uiButton *b, void *data), void *data);
 _UI_EXTERN uiButton *uiNewButton(const char *text);
 _UI_EXTERN void uiButtonSetMinSize(uiButton *b, int width, int height);
+_UI_EXTERN void uiButtonPreferredSize(uiButton *b, int *width, int *height);
 
 typedef struct uiBox uiBox;
 #define uiBox(this) ((uiBox *) (this))
diff --git a/windows/button.cpp b/windows/button.cpp
index 9affd985..3acaaa67 100644
--- a/windows/button.cpp
+++ b/windows/button.cpp
@@ -89,6 +89,11 @@ void uiButtonSetMinSize(uiButton *b, int width, int height)
 	uiWindowsControlMinimumSizeChanged(uiWindowsControl(b));
 }
 
+void uiButtonPreferredSize(uiButton *b, int *width, int *height)
+{
+	uiButtonMinimumSize(uiWindowsControl(b), width, height);
+}
+
 void uiButtonOnClicked(uiButton *b, void (*f)(uiButton *, void *), void *data)
 {
 	b->onClicked = f;