diff --git a/src/gallium/state_trackers/dri/sw/drisw.c b/src/gallium/state_trackers/dri/sw/drisw.c
index 64a64af14ec..6f50b05c2be 100644
--- a/src/gallium/state_trackers/dri/sw/drisw.c
+++ b/src/gallium/state_trackers/dri/sw/drisw.c
@@ -414,7 +414,7 @@ const struct __DriverAPIRec driDriverAPI = {
 PUBLIC const __DRIextension *__driDriverExtensions[] = {
     &driCoreExtension.base,
     &driSWRastExtension.base,
-    &driCopySubBufferExtension,
+    &driCopySubBufferExtension.base,
     &gallium_config_options.base,
     NULL
 };