diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 57e6408288c80f6adb86c2b29b23a1b0e1829627..53acc6756ee0310017ccc6ef2255c7ef55c2e63e 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -1966,16 +1966,16 @@ int drm_mode_convert_umode(struct drm_device *dev,
 
 	switch (in->flags & DRM_MODE_FLAG_PIC_AR_MASK) {
 	case DRM_MODE_FLAG_PIC_AR_4_3:
-		out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_4_3;
+		out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3;
 		break;
 	case DRM_MODE_FLAG_PIC_AR_16_9:
-		out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_16_9;
+		out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9;
 		break;
 	case DRM_MODE_FLAG_PIC_AR_64_27:
-		out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_64_27;
+		out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27;
 		break;
 	case DRM_MODE_FLAG_PIC_AR_256_135:
-		out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_256_135;
+		out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_256_135;
 		break;
 	default:
 		out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE;