diff --git a/clang-tools-extra/clangd/index/FileIndex.h b/clang-tools-extra/clangd/index/FileIndex.h
--- a/clang-tools-extra/clangd/index/FileIndex.h
+++ b/clang-tools-extra/clangd/index/FileIndex.h
@@ -97,7 +97,7 @@
   size_t Version = 0;
   llvm::StringMap<std::shared_ptr<SymbolSlab>> SymbolsSnapshot;
   llvm::StringMap<RefSlabAndCountReferences> RefsSnapshot;
-  llvm::StringMap<std::shared_ptr<RelationSlab>> RelatiosSnapshot;
+  llvm::StringMap<std::shared_ptr<RelationSlab>> RelationsSnapshot;
 };
 
 /// This manages symbols from files and an in-memory index on all symbols.
diff --git a/clang-tools-extra/clangd/index/FileIndex.cpp b/clang-tools-extra/clangd/index/FileIndex.cpp
--- a/clang-tools-extra/clangd/index/FileIndex.cpp
+++ b/clang-tools-extra/clangd/index/FileIndex.cpp
@@ -245,9 +245,9 @@
     RefsSnapshot[Key] = std::move(Item);
   }
   if (!Relations)
-    RelatiosSnapshot.erase(Key);
+    RelationsSnapshot.erase(Key);
   else
-    RelatiosSnapshot[Key] = std::move(Relations);
+    RelationsSnapshot[Key] = std::move(Relations);
 }
 
 std::unique_ptr<SymbolIndex>
@@ -266,7 +266,7 @@
       if (FileAndRefs.second.CountReferences)
         MainFileRefs.push_back(RefSlabs.back().get());
     }
-    for (const auto &FileAndRelations : RelatiosSnapshot)
+    for (const auto &FileAndRelations : RelationsSnapshot)
       RelationSlabs.push_back(FileAndRelations.second);
 
     if (Version)