diff --git a/libs/vkd3d-shader/hlsl_sm1.c b/libs/vkd3d-shader/hlsl_sm1.c
index b9a681a4..d56b6894 100644
--- a/libs/vkd3d-shader/hlsl_sm1.c
+++ b/libs/vkd3d-shader/hlsl_sm1.c
@@ -632,6 +632,10 @@ static void write_sm1_expr(struct hlsl_ctx *ctx, struct vkd3d_bytecode_buffer *b
             write_sm1_binary_op(ctx, buffer, D3DSIO_ADD, &instr->reg, &arg1->reg, &arg2->reg);
             break;
 
+        case HLSL_OP2_MAX:
+            write_sm1_binary_op(ctx, buffer, D3DSIO_MAX, &instr->reg, &arg1->reg, &arg2->reg);
+            break;
+
         case HLSL_OP2_MUL:
             write_sm1_binary_op(ctx, buffer, D3DSIO_MUL, &instr->reg, &arg1->reg, &arg2->reg);
             break;