diff --git a/plugins/input/postgis/connection_manager.hpp b/plugins/input/postgis/connection_manager.hpp
index f50569355..ca6909ecd 100644
--- a/plugins/input/postgis/connection_manager.hpp
+++ b/plugins/input/postgis/connection_manager.hpp
@@ -106,7 +106,7 @@ public:
     bool registerPool(const ConnectionCreator<Connection>& creator,unsigned initialSize,unsigned maxSize) 
     {       
 #ifdef MAPNIK_THREADSAFE
-        mutex::scoped_lock lock(mutex_);
+        //mutex::scoped_lock lock(mutex_);
 #endif
         if (pools_.find(creator.id())==pools_.end())
         {
@@ -121,7 +121,7 @@ public:
     boost::shared_ptr<PoolType> getPool(std::string const& key) 
     {
 #ifdef MAPNIK_THREADSAFE
-        mutex::scoped_lock lock(mutex_);
+        //mutex::scoped_lock lock(mutex_);
 #endif 
         ContType::const_iterator itr=pools_.find(key);
         if (itr!=pools_.end())
@@ -135,7 +135,7 @@ public:
     HolderType get(std::string const& key)
     {
 #ifdef MAPNIK_THREADSAFE
-        mutex::scoped_lock lock(mutex_);
+        //mutex::scoped_lock lock(mutex_);
 #endif 
         ContType::const_iterator itr=pools_.find(key);
         if (itr!=pools_.end())