diff --git a/src/nv_dri.c b/src/nv_dri.c
index 0640287..09c5a88 100644
--- a/src/nv_dri.c
+++ b/src/nv_dri.c
@@ -245,7 +245,7 @@ Bool NVDRIGetVersion(ScrnInfoPtr pScrn)
 	
 	/* temporary lock step versioning */
 #if NOUVEAU_DRM_HEADER_PATCHLEVEL != 10
-#error nouveau_drm.h doesn't match expected patchlevel, update libdrm.
+#error nouveau_drm.h doesn\'t match expected patchlevel, update libdrm.
 #endif
 	if (pNv->pKernelDRMVersion->version_patchlevel !=
 			NOUVEAU_DRM_HEADER_PATCHLEVEL) {
@@ -301,8 +301,9 @@ Bool NVDRIScreenInit(ScrnInfoPtr pScrn)
 	 *
 	 *        At the moment the setup here will probably only work if using an AGP cmdbuf..
 	 */
-	pDRIInfo->frameBufferPhysicalAddress = (void *)pNv->VRAMPhysical;
 	pDRIInfo->frameBufferSize            = pNv->VRAMPhysicalSize / 2;
+	pDRIInfo->frameBufferPhysicalAddress = (void *)pNv->VRAMPhysical +
+	                                       pDRIInfo->frameBufferSize;
 	pDRIInfo->frameBufferStride          = pScrn->displayWidth * pScrn->bitsPerPixel/8;
 
 	pDRIInfo->ddxDrawableTableEntry      = 1;