diff --git a/src/data/IDMapper.h b/src/data/IDMapper.h
index 93db410..ebfb2c8 100644
--- a/src/data/IDMapper.h
+++ b/src/data/IDMapper.h
@@ -36,7 +36,7 @@ namespace Feather
 			AddMapping(m_NextID, value);
 		}
 
-		inline int GetID(T& value) const
+		inline int GetID(const T& value) const
 		{
 			return m_ValueToID.at(value);
 		}
diff --git a/src/world/Chunk.cpp b/src/world/Chunk.cpp
index 8b7a7f0..01e495e 100644
--- a/src/world/Chunk.cpp
+++ b/src/world/Chunk.cpp
@@ -63,6 +63,8 @@ namespace Feather
 				}
 				catch (std::out_of_range& err) {
 					(void)err;
+					int defaultId = World::GLOBAL_PALETTE.GetDefaultID();
+					section->localPalette.AddMapping(i, defaultId);
 					Log::Warn("Chunk Section Palette maps id {} to invalid block state with name '{}'", i, name);
 					continue;
 				}
diff --git a/src/world/Palette.h b/src/world/Palette.h
index abbdee2..3285f1a 100644
--- a/src/world/Palette.h
+++ b/src/world/Palette.h
@@ -14,7 +14,7 @@ namespace Feather
 			m_registry(registry)
 		{}
 
-		virtual int GetID(T& value) const = 0;
+		virtual int GetID(const T& value) const = 0;
 
 		virtual const T& ByID(int id) const = 0;
 	};
@@ -29,7 +29,10 @@ namespace Feather
 			m_defaultValue(defaultValue)
 		{}
 
-		inline virtual int GetID(T& value) const final { return m_registry.GetID(value); }
+		inline const T& GetDefault() const { return *m_defaultValue; }
+		inline int GetDefaultID() const { return GetID(GetDefault()); }
+
+		inline virtual int GetID(const T& value) const final { return m_registry.GetID(value); }
 		inline virtual const T& ByID(int id) const final { return m_registry.ByID(id);  }
 	};
 }
\ No newline at end of file