diff --git a/src/shared/ByteBuffer.h b/src/shared/ByteBuffer.h
index 2670003c1..eec35c8a3 100644
--- a/src/shared/ByteBuffer.h
+++ b/src/shared/ByteBuffer.h
@@ -506,7 +506,7 @@ class ByteBuffer
 };
 
 template <typename T>
-inline ByteBuffer &operator<<(ByteBuffer &b, std::vector<T> v)
+inline ByteBuffer &operator<<(ByteBuffer &b, std::vector<T> const& v)
 {
     b << (uint32)v.size();
     for (typename std::vector<T>::iterator i = v.begin(); i != v.end(); ++i)
@@ -532,7 +532,7 @@ inline ByteBuffer &operator>>(ByteBuffer &b, std::vector<T> &v)
 }
 
 template <typename T>
-inline ByteBuffer &operator<<(ByteBuffer &b, std::list<T> v)
+inline ByteBuffer &operator<<(ByteBuffer &b, std::list<T> const& v)
 {
     b << (uint32)v.size();
     for (typename std::list<T>::iterator i = v.begin(); i != v.end(); ++i)
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 5b1fe45e8..e8ac529d3 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "9554"
+ #define REVISION_NR "9555"
 #endif // __REVISION_NR_H__