diff --git a/src/definition/BaseDefinition.cpp b/src/definition/BaseDefinition.cpp
index 53eb2c2..bc0e890 100644
--- a/src/definition/BaseDefinition.cpp
+++ b/src/definition/BaseDefinition.cpp
@@ -74,7 +74,7 @@ void BaseDefinition::validate()
 
 void BaseDefinition::addChild(BaseDefinition* child)
 {
-    if (std::find(children.begin(), children.end(), child) != children.end())
+    if (std::find(children.begin(), children.end(), child) == children.end())
     {
         children.push_back(child);
         child->parent = this;
@@ -91,6 +91,6 @@ void BaseDefinition::removeChild(BaseDefinition* child)
     }
     else
     {
-        qWarning("Trying to remove not found child from '%s'", name.c_str());
+        qWarning("Trying to remove not found child '%s' from '%s'", child->name.c_str(), name.c_str());
     }
 }
diff --git a/src/definition/CloudsDefinition.cpp b/src/definition/CloudsDefinition.cpp
index 0608479..633828e 100644
--- a/src/definition/CloudsDefinition.cpp
+++ b/src/definition/CloudsDefinition.cpp
@@ -10,6 +10,7 @@ static BaseDefinition* _layerConstructor(Layers* parent)
 CloudsDefinition::CloudsDefinition(BaseDefinition* parent):
     Layers(parent, _layerConstructor)
 {
+    setName("clouds");
 }
 
 void CloudsDefinition::applyPreset(CloudsPreset preset)
diff --git a/src/definition/Layers.cpp b/src/definition/Layers.cpp
index 4413d3a..fa6285a 100644
--- a/src/definition/Layers.cpp
+++ b/src/definition/Layers.cpp
@@ -75,7 +75,7 @@ int Layers::findLayer(BaseDefinition* layer) const
         }
         i++;
     }
-    qWarning("Layer %p not found, on a total of %d, returning %d", layer, (int)layers.size(), -1);
+    qWarning("Layer %p (%s) not found, on a total of %d", layer, layer->getName().c_str(), (int)layers.size());
     return -1;
 }
 
@@ -108,6 +108,10 @@ void Layers::removeLayer(int position)
         layers.erase(layers.begin() + position);
         delete removed;
     }
+    else
+    {
+        qWarning("Removing unknown layer %d on %d from '%s'", position, (int)layers.size(), getName().c_str());
+    }
 }
 
 void Layers::removeLayer(BaseDefinition* layer)
diff --git a/src/render/preview/WaterAspectPreviewRenderer.cpp b/src/render/preview/WaterAspectPreviewRenderer.cpp
index 057afbf..0c16f58 100644
--- a/src/render/preview/WaterAspectPreviewRenderer.cpp
+++ b/src/render/preview/WaterAspectPreviewRenderer.cpp
@@ -101,7 +101,7 @@ void WaterAspectPreviewRenderer::choiceChangeEvent(const std::string &key, int p
     }
 }
 
-double WaterAspectPreviewRenderer::getPrecision(const Vector3 &location)
+double WaterAspectPreviewRenderer::getPrecision(const Vector3 &)
 {
     return 0.000001;
 }