| Index: src/unique.h
 | 
| diff --git a/src/unique.h b/src/unique.h
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| index 321eb3683dbedac418dd442c9d9f30ce9a9257ba..b56ee84a33695488d696aa89d3ea6e58361a0570 100644
 | 
| --- a/src/unique.h
 | 
| +++ b/src/unique.h
 | 
| @@ -49,7 +49,7 @@ class Unique {
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|        // TODO(titzer): other immortable immovable objects are also fine.
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|        DCHECK(!AllowHeapAllocation::IsAllowed() || handle->IsMap());
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|        raw_address_ = reinterpret_cast<Address>(*handle);
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| -      DCHECK_NE(raw_address_, NULL);  // Non-null should imply non-zero address.
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| +      DCHECK_NOT_NULL(raw_address_);  // Non-null should imply non-zero address.
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|      }
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|      handle_ = handle;
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|    }
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| 
 |