diff --git a/src/gallium/drivers/iris/iris_screen.c b/src/gallium/drivers/iris/iris_screen.c
index b3c4466805e..83f5208e65e 100644
--- a/src/gallium/drivers/iris/iris_screen.c
+++ b/src/gallium/drivers/iris/iris_screen.c
@@ -151,6 +151,7 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
+   case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
    case PIPE_CAP_ACCELERATED:
    case PIPE_CAP_UMA:
    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED: