diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
index e470a4a..8504f38 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -1123,7 +1123,7 @@ nv50_disp_intr_unk20(struct nv50_disp_priv *priv, u32 super)
 				if (outp.type == DCB_OUTPUT_DP)
 					nv50_disp_intr_unk20_dp(priv, &outp, pclk);
 				addr = 0x614300 + (ffs(outp.or) - 1) * 0x800;
-				mask = 0x00000707;
+				mask = 0x00000f0f;
 				data = (conf & 0x0100) ? 0x0101 : 0x0000;
 			}