diff --git a/src/gallium/drivers/iris/iris_formats.c b/src/gallium/drivers/iris/iris_formats.c
index b18645439f3..38963de5182 100644
--- a/src/gallium/drivers/iris/iris_formats.c
+++ b/src/gallium/drivers/iris/iris_formats.c
@@ -145,7 +145,6 @@ iris_isl_format_for_pipe_format(enum pipe_format pf)
       [PIPE_FORMAT_RGTC2_UNORM]             = ISL_FORMAT_BC5_UNORM,
       [PIPE_FORMAT_RGTC2_SNORM]             = ISL_FORMAT_BC5_SNORM,
 
-      [PIPE_FORMAT_B5G5R5X1_UNORM]          = ISL_FORMAT_B5G5R5X1_UNORM,
       [PIPE_FORMAT_R10G10B10A2_USCALED]     = ISL_FORMAT_R10G10B10A2_USCALED,
       [PIPE_FORMAT_R11G11B10_FLOAT]         = ISL_FORMAT_R11G11B10_FLOAT,
       [PIPE_FORMAT_R9G9B9E5_FLOAT]          = ISL_FORMAT_R9G9B9E5_SHAREDEXP,