diff --git a/libs/vkd3d-shader/hlsl_sm4.c b/libs/vkd3d-shader/hlsl_sm4.c
index 7f2f9608..05b0dc1f 100644
--- a/libs/vkd3d-shader/hlsl_sm4.c
+++ b/libs/vkd3d-shader/hlsl_sm4.c
@@ -1420,6 +1420,10 @@ static void write_sm4_expr(struct hlsl_ctx *ctx,
                     write_sm4_unary_op(buffer, VKD3D_SM4_OP_INEG, &expr->node, arg1, 0);
                     break;
 
+                case HLSL_OP2_MAX:
+                    write_sm4_binary_op(buffer, VKD3D_SM4_OP_IMAX, &expr->node, arg1, arg2);
+                    break;
+
                 default:
                     hlsl_fixme(ctx, &expr->node.loc, "SM4 int \"%s\" expression.", debug_hlsl_expr_op(expr->op));
                     break;