diff --git a/src/basics/NoiseGenerator.cpp b/src/basics/NoiseGenerator.cpp
index 907095b..c8fb741 100644
--- a/src/basics/NoiseGenerator.cpp
+++ b/src/basics/NoiseGenerator.cpp
@@ -65,6 +65,11 @@ void NoiseGenerator::load(PackStream* stream)
     stream->read(&height_offset);
     stream->read(&level_count);
 
+    if (level_count > MAX_LEVEL_COUNT)
+    {
+        level_count = MAX_LEVEL_COUNT;
+    }
+
     for (x = 0; x < level_count; x++)
     {
         NoiseLevel* level = levels + x;
diff --git a/src/basics/NoiseState.cpp b/src/basics/NoiseState.cpp
index 64ee605..14019fe 100644
--- a/src/basics/NoiseState.cpp
+++ b/src/basics/NoiseState.cpp
@@ -29,6 +29,12 @@ void NoiseState::load(PackStream *stream)
     int levels;
     stream->read(&levels);
     level_offsets.clear();
+
+    if (levels > 1000)
+    {
+        levels = 1000;
+    }
+
     for (int i = 0; i < levels; i++)
     {
         NoiseOffset level_offset;
diff --git a/src/definition/Layers.cpp b/src/definition/Layers.cpp
index a509335..fe46bfe 100644
--- a/src/definition/Layers.cpp
+++ b/src/definition/Layers.cpp
@@ -1,5 +1,6 @@
 #include "Layers.h"
 
+#include "PackStream.h"
 #include "Logs.h"
 
 Layers::Layers(DefinitionNode* parent, const std::string &name, LayerConstructor layer_constructor):
@@ -15,6 +16,32 @@ Layers::~Layers()
     delete null_layer;
 }
 
+void Layers::save(PackStream *stream) const
+{
+    int layer_count = (int)layers.size();
+    stream->write(&layer_count);
+
+    DefinitionNode::save(stream);
+}
+
+void Layers::load(PackStream *stream)
+{
+    int layer_count;
+    stream->read(&layer_count);
+
+    if (layer_count > max_layer_count)
+    {
+        layer_count = max_layer_count;
+    }
+    clear();
+    for (int i = 0; i < layer_count; i++)
+    {
+        addLayer();
+    }
+
+    DefinitionNode::load(stream);
+}
+
 void Layers::copy(DefinitionNode* destination_) const
 {
     DefinitionNode::copy(destination_);
diff --git a/src/definition/Layers.h b/src/definition/Layers.h
index 87ba85d..7e514d0 100644
--- a/src/definition/Layers.h
+++ b/src/definition/Layers.h
@@ -19,6 +19,8 @@ public:
     Layers(DefinitionNode* parent, const std::string &name, LayerConstructor layer_constructor);
     virtual ~Layers();
 
+    virtual void save(PackStream *stream) const override;
+    virtual void load(PackStream *stream) override;
     virtual void copy(DefinitionNode* destination) const override;
     Layers* newCopy() const;
 
@@ -48,6 +50,7 @@ public:
     int max_layer_count;
     std::vector<DefinitionNode*> layers;
     DefinitionNode* null_layer;
+
 };
 
 }
diff --git a/src/definition/Scenery.cpp b/src/definition/Scenery.cpp
index 910d484..08a9236 100644
--- a/src/definition/Scenery.cpp
+++ b/src/definition/Scenery.cpp
@@ -92,6 +92,10 @@ Scenery::FileOperationResult Scenery::loadGlobal(const std::string &filepath)
 
     load(&stream);
 
+    // Reset read headers, to test them again
+    app_header = -1;
+    version_header = -1;
+
     stream.read(&version_header);
     if ((int)version_header != DATA_VERSION)
     {
diff --git a/src/tests/Scenery_Test.cpp b/src/tests/Scenery_Test.cpp
index 2a251e1..5dbc439 100644
--- a/src/tests/Scenery_Test.cpp
+++ b/src/tests/Scenery_Test.cpp
@@ -4,12 +4,13 @@
 
 TEST(Scenery, saveGlobal)
 {
-    Scenery scenery;
-    scenery.autoPreset();
+    Scenery scenery1;
+    scenery1.autoPreset();
 
-    Scenery::FileOperationResult result = scenery.saveGlobal("/tmp/test_paysages_scenery");
+    Scenery::FileOperationResult result = scenery1.saveGlobal("/tmp/test_paysages_scenery");
     EXPECT_EQ((int)Scenery::FILE_OPERATION_OK, result);
 
-    result = scenery.loadGlobal("/tmp/test_paysages_scenery");
+    Scenery scenery2;
+    result = scenery2.loadGlobal("/tmp/test_paysages_scenery");
     EXPECT_EQ((int)Scenery::FILE_OPERATION_OK, result);
 }