diff --git a/src/video/Xext/Xv/Xv.c b/src/video/Xext/Xv/Xv.c
index 7a1c9c28b..11137d2b1 100644
--- a/src/video/Xext/Xv/Xv.c
+++ b/src/video/Xext/Xv/Xv.c
@@ -267,6 +267,7 @@ SDL_NAME(XvQueryAdaptors)(
   *p_nAdaptors = rep.num_adaptors;
   *p_pAdaptors = pas;
 
+  Xfree(buffer);
   UnlockDisplay(dpy);
   SyncHandle();