diff --git a/chibild.h b/chibild.h
index ba75d4e9..5b89530c 100644
--- a/chibild.h
+++ b/chibild.h
@@ -81,9 +81,22 @@ public:
   ObjectFile *file;
 };
 
+namespace tbb {
+template<>
+struct tbb_hash_compare<StringRef> {
+  static size_t hash(const StringRef& k) {
+    return llvm::hash_value(k);
+  }
+
+  static bool equal(const StringRef& k1, const StringRef& k2) {
+    return k1 == k2;
+  }
+};
+}
+
 class SymbolTable {
 public:
-  tbb::concurrent_hash_map<int, int> map;
+  tbb::concurrent_hash_map<StringRef, Symbol *> map;
 };
 
 class InputSection {