diff --git a/modules/desktop_capture/win/screen_capture_utils.h b/modules/desktop_capture/win/screen_capture_utils.h
index f494dd2176..5c4c11d542 100644
--- a/modules/desktop_capture/win/screen_capture_utils.h
+++ b/modules/desktop_capture/win/screen_capture_utils.h
@@ -15,6 +15,7 @@
 #include <vector>
 
 #include "modules/desktop_capture/desktop_capturer.h"
+#include "rtc_base/system/rtc_export.h"
 
 namespace webrtc {
 
@@ -39,8 +40,8 @@ DesktopRect GetFullscreenRect();
 // Get the rect of the screen identified by |screen|, relative to the primary
 // display's top-left. If the screen device key does not match |device_key|, or
 // the screen does not exist, or any error happens, an empty rect is returned.
-DesktopRect GetScreenRect(DesktopCapturer::SourceId screen,
-                          const std::wstring& device_key);
+RTC_EXPORT DesktopRect GetScreenRect(DesktopCapturer::SourceId screen,
+                                     const std::wstring& device_key);
 
 }  // namespace webrtc