diff --git a/index_tests/namespaces/namespace_alias.cc b/index_tests/namespaces/namespace_alias.cc
index 118e20c7..b659f553 100644
--- a/index_tests/namespaces/namespace_alias.cc
+++ b/index_tests/namespaces/namespace_alias.cc
@@ -87,7 +87,7 @@ OUTPUT:
       "kind": 3,
       "declarations": ["3:20-3:23|17805385787823406700|2|1025"],
       "alias_of": 0,
-      "bases": [17805385787823406700, 17805385787823406700, 17805385787823406700, 17805385787823406700],
+      "bases": [17805385787823406700],
       "derived": [],
       "types": [],
       "funcs": [],
@@ -105,7 +105,7 @@ OUTPUT:
       "kind": 3,
       "declarations": ["2:15-2:18|926793467007732869|2|1025"],
       "alias_of": 0,
-      "bases": [926793467007732869, 926793467007732869, 926793467007732869, 926793467007732869],
+      "bases": [926793467007732869],
       "derived": [14450849931009540802],
       "types": [14450849931009540802],
       "funcs": [],
diff --git a/src/clang_tu.cc b/src/clang_tu.cc
index 64c4a4ec..bc40e404 100644
--- a/src/clang_tu.cc
+++ b/src/clang_tu.cc
@@ -85,7 +85,8 @@ std::unique_ptr<ClangTranslationUnit> ClangTranslationUnit::Create(
     Unit.reset(ASTUnit::LoadFromCommandLine(
         Args.data(), Args.data() + Args.size(),
         /*PCHContainerOpts=*/ret->PCHCO, Diags,
-        /*ResourceFilePath=*/"", /*OnlyLocalDecls=*/false,
+        /*ResourceFilePath=*/g_config->clang.resourceDir,
+        /*OnlyLocalDecls=*/false,
         /*CaptureDiagnostics=*/diagnostic, Remapped,
         /*RemappedFilesKeepOriginalName=*/true, 1,
         diagnostic ? TU_Complete : TU_Prefix,
diff --git a/src/indexer.cc b/src/indexer.cc
index 3a85451d..95b66ea5 100644
--- a/src/indexer.cc
+++ b/src/indexer.cc
@@ -1208,6 +1208,7 @@ std::vector<std::unique_ptr<IndexFile>> Index(
       Uniquify(it.second.derived);
       Uniquify(it.second.uses);
       // e.g. declaration + out-of-line definition
+      Uniquify(it.second.def.bases);
       Uniquify(it.second.def.funcs);
     }
     for (auto& it : entry->usr2var)