diff --git a/ortools/base/hash.h b/ortools/base/hash.h
index 7b27fffffa..8da8f74a54 100644
--- a/ortools/base/hash.h
+++ b/ortools/base/hash.h
@@ -65,10 +65,8 @@ static inline void mix(uint64_t& a, uint64_t& b, uint64_t& c) {  // NOLINT
   c -= b;
   c ^= (b >> 22);
 }
-
 }  // namespace operations_research
 
-
 #endif  // SWIG
 
 namespace util_hash {