3 files changed, 14 insertions, 8 deletions
diff --git a/src/tools/mmaps_generator/CMakeLists.txt b/src/tools/mmaps_generator/CMakeLists.txt
index a2b729ca998..8661c035c8e 100644
--- a/src/tools/mmaps_generator/CMakeLists.txt
+++ b/src/tools/mmaps_generator/CMakeLists.txt
@@ -48,6 +48,7 @@ target_link_libraries(mmaps_generator
   Detour
   ${BZIP2_LIBRARIES}
   ${ZLIB_LIBRARIES}
+  ${CMAKE_THREAD_LIBS_INIT}
   ${Boost_LIBRARIES}
 )
 
diff --git a/src/tools/mmaps_generator/MapBuilder.cpp b/src/tools/mmaps_generator/MapBuilder.cpp
index 01a342249fd..94b5f3607cf 100644
--- a/src/tools/mmaps_generator/MapBuilder.cpp
+++ b/src/tools/mmaps_generator/MapBuilder.cpp
@@ -171,20 +171,25 @@ namespace MMAP
     {
         while (1)
         {
-            uint32 mapId;
+            uint32* mapId = nullptr;
 
             _queue.WaitAndPop(mapId);
 
             if (_cancelationToken)
                 return;
 
-            buildMap(mapId);
+            if (!mapId) // shouldn't happen?
+                continue;
+
+            buildMap(*mapId);
+
+            delete mapId;
         }
     }
 
     void MapBuilder::buildAllMaps(int threads)
     {
-        for (size_t i = 0; i < threads; ++i)
+        for (int i = 0; i < threads; ++i)
         {
             _workerThreads.push_back(std::thread(&MapBuilder::WorkerThread, this));
         }
@@ -196,13 +201,13 @@ namespace MMAP
 
         for (TileList::iterator it = m_tiles.begin(); it != m_tiles.end(); ++it)
         {
-            uint32 mapID = it->m_mapId;
-            if (!shouldSkipMap(mapID))
+            uint32 mapId = it->m_mapId;
+            if (!shouldSkipMap(mapId))
             {
                 if (threads > 0)
-                    _queue.Push(mapID);
+                    _queue.Push(new uint32(mapId));
                 else
-                    buildMap(mapID);
+                    buildMap(mapId);
             }
         }
 
diff --git a/src/tools/mmaps_generator/MapBuilder.h b/src/tools/mmaps_generator/MapBuilder.h
index 1d688ccfa77..c2168d048b4 100644
--- a/src/tools/mmaps_generator/MapBuilder.h
+++ b/src/tools/mmaps_generator/MapBuilder.h
@@ -143,7 +143,7 @@ namespace MMAP
             rcContext* m_rcContext;
 
             std::vector<std::thread> _workerThreads;
-            ProducerConsumerQueue<uint32> _queue;
+            ProducerConsumerQueue<uint32*> _queue;
             std::atomic<bool> _cancelationToken;
     };
 }