diff --git a/randr/randrstr.h b/randr/randrstr.h
index 121d3bece..119418ce5 100644
--- a/randr/randrstr.h
+++ b/randr/randrstr.h
@@ -595,14 +595,6 @@ extern _X_EXPORT Bool
 extern _X_EXPORT Bool
  RRCrtcGammaSetSize(RRCrtcPtr crtc, int size);
 
-/*
- * Return the area of the frame buffer scanned out by the crtc,
- * taking into account the current mode and rotation
- */
-
-extern _X_EXPORT void
- RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height);
-
 /*
  * Return crtc transform
  */
diff --git a/randr/randrstr_priv.h b/randr/randrstr_priv.h
index fa7b1c2cc..94cc02660 100644
--- a/randr/randrstr_priv.h
+++ b/randr/randrstr_priv.h
@@ -193,4 +193,14 @@ void RRCrtcSetTransformSupport(RRCrtcPtr crtc, Bool transforms);
  */
 void RRDeliverCrtcEvent(ClientPtr pClient, WindowPtr pWin, RRCrtcPtr crtc);
 
+/*
+ * Return the area of the frame buffer scanned out by the crtc,
+ * taking into account the current mode and rotation
+ *
+ * @param crtc    the CRTC to query
+ * @param width   return buffer for width value
+ * @param height  return buffer for height value
+ */
+void RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height);
+
 #endif /* _XSERVER_RANDRSTR_PRIV_H_ */
diff --git a/randr/rrpointer.c b/randr/rrpointer.c
index e1ebd9fc3..ec0f21622 100644
--- a/randr/rrpointer.c
+++ b/randr/rrpointer.c
@@ -23,6 +23,7 @@
 
 #include "dix/cursor_priv.h"
 #include "dix/input_priv.h"
+#include "randr/randrstr_priv.h"
 
 #include "randrstr.h"
 #include "inputstr.h"