diff --git a/llvm/lib/CAS/DatabaseFile.cpp b/llvm/lib/CAS/DatabaseFile.cpp
index f0f3c75d4550..b862eabe7f35 100644
--- a/llvm/lib/CAS/DatabaseFile.cpp
+++ b/llvm/lib/CAS/DatabaseFile.cpp
@@ -89,7 +89,7 @@ Error DatabaseFile::addTable(TableHandle Table) {
 }
 
 std::optional<TableHandle> DatabaseFile::findTable(StringRef Name) {
-  uint64_t RootTableOffset = H->RootTableOffset.load();
+  int64_t RootTableOffset = H->RootTableOffset.load();
   if (!RootTableOffset)
     return std::nullopt;