diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
index ab821839ecf..787a385c567 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -2941,7 +2941,7 @@ isl_format_get_aux_map_encoding(enum isl_format format)
    case ISL_FORMAT_R32_SINT: return 0x12;
    case ISL_FORMAT_R32_UINT: return 0x13;
    case ISL_FORMAT_R32_FLOAT: return 0x11;
-   case ISL_FORMAT_R24_UNORM_X8_TYPELESS: return 0x11;
+   case ISL_FORMAT_R24_UNORM_X8_TYPELESS: return 0x13;
    case ISL_FORMAT_B5G6R5_UNORM: return 0xA;
    case ISL_FORMAT_B5G6R5_UNORM_SRGB: return 0xA;
    case ISL_FORMAT_B5G5R5A1_UNORM: return 0xA;