diff --git a/src/legacy/i810/i810_dri.c b/src/legacy/i810/i810_dri.c
index 2f02dd92..2b3f1e19 100644
--- a/src/legacy/i810/i810_dri.c
+++ b/src/legacy/i810/i810_dri.c
@@ -959,7 +959,7 @@ I810DRIFinishScreenInit(ScreenPtr pScreen)
    ScrnInfoPtr        pScrn = xf86ScreenToScrn(pScreen);
    I810Ptr info  = I810PTR(pScrn);
 
-   memset(sPriv, 0, sizeof(sPriv));
+   memset(sPriv, 0, sizeof(*sPriv));
 
    /* Have shadow run only while there is 3d active.
     */