diff --git a/llvm/tools/llvm-pdbutil/llvm-pdbutil.h b/llvm/tools/llvm-pdbutil/llvm-pdbutil.h
index 811037a..78cea8f 100644
--- a/llvm/tools/llvm-pdbutil/llvm-pdbutil.h
+++ b/llvm/tools/llvm-pdbutil/llvm-pdbutil.h
@@ -93,11 +93,13 @@
 }
 
 namespace bytes {
-struct BlockRange {
-  uint32_t Min;
-  llvm::Optional<uint32_t> Max;
+struct NumberRange {
+  uint64_t Min;
+  llvm::Optional<uint64_t> Max;
 };
-extern llvm::Optional<BlockRange> DumpBlockRange;
+
+extern llvm::Optional<NumberRange> DumpBlockRange;
+extern llvm::Optional<NumberRange> DumpByteRange;
 extern llvm::cl::list<std::string> DumpStreamData;
 } // namespace bytes