diff --git a/include/utils/BitSet.h b/include/utils/BitSet.h
index 9452e86..e189d0c 100644
--- a/include/utils/BitSet.h
+++ b/include/utils/BitSet.h
@@ -18,6 +18,7 @@
 #define UTILS_BITSET_H
 
 #include <stdint.h>
+#include <utils/TypeHelpers.h>
 
 /*
  * Contains some bit manipulation helpers.
@@ -102,6 +103,8 @@
     inline bool operator!= (const BitSet32& other) const { return value != other.value; }
 };
 
+ANDROID_BASIC_TYPES_TRAITS(BitSet32)
+
 } // namespace android
 
 #endif // UTILS_BITSET_H