diff --git a/src/gallium/drivers/r600/sfn/sfn_nir.cpp b/src/gallium/drivers/r600/sfn/sfn_nir.cpp
index 2e639fe4cae..72a89e6bc92 100644
--- a/src/gallium/drivers/r600/sfn/sfn_nir.cpp
+++ b/src/gallium/drivers/r600/sfn/sfn_nir.cpp
@@ -862,7 +862,7 @@ r600_shader_from_nir(struct r600_context *rctx,
        (sh->info.stage == MESA_SHADER_VERTEX && key->vs.as_ls)) {
       auto prim_type = sh->info.stage == MESA_SHADER_TESS_EVAL
                           ? u_tess_prim_from_shader(sh->info.tess._primitive_mode)
-                          : key->tcs.prim_mode;
+                          : (pipe_prim_type)key->tcs.prim_mode;
       NIR_PASS_V(sh, r600_lower_tess_io, static_cast<pipe_prim_type>(prim_type));
    }