diff --git a/include/exevents.h b/include/exevents.h
index cf7d71aca..0892f4d0a 100644
--- a/include/exevents.h
+++ b/include/exevents.h
@@ -30,6 +30,8 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #ifndef EXEVENTS_H
 #define EXEVENTS_H
 
+#include <X11/extensions/XIproto.h>
+
 extern void RegisterOtherDevice (
 	DeviceIntPtr           /* device */);