diff --git a/randr/randrstr.h b/randr/randrstr.h
index be596d4e8..9e7bbf3e7 100644
--- a/randr/randrstr.h
+++ b/randr/randrstr.h
@@ -889,8 +889,10 @@ extern _X_EXPORT int
 ProcRRDeleteOutputProperty (ClientPtr client);
 
 /* rrxinerama.c */
+#ifdef XINERAMA
 extern _X_EXPORT void
 RRXineramaExtensionInit(void);
+#endif
 
 #endif /* _RANDRSTR_H_ */