diff --git a/SDK/include/values.hpp b/SDK/include/values.hpp
index d61659b2a..ff26f480e 100644
--- a/SDK/include/values.hpp
+++ b/SDK/include/values.hpp
@@ -59,6 +59,10 @@ constexpr float MIN_WORLD_BOUNDS = -20000.0f;
 constexpr int MAX_TEXTDRAW_STR_LENGTH = 800;
 constexpr int MAX_VEHICLE_CARRIAGES = 3;
 constexpr int MAX_GAMETEXT_STYLES = 16;
+constexpr int MIN_CUSTOM_SKIN_ID = 20001;
+constexpr int MAX_CUSTOM_SKIN_ID = 30000;
+constexpr int MIN_CUSTOM_OBJECT_ID = -30000;
+constexpr int MAX_CUSTOM_OBJECT_ID = -1000;
 
 enum Key
 {
diff --git a/Server/Components/CustomModels/models.cpp b/Server/Components/CustomModels/models.cpp
index f5e602671..23694c9ae 100644
--- a/Server/Components/CustomModels/models.cpp
+++ b/Server/Components/CustomModels/models.cpp
@@ -589,9 +589,9 @@ class CustomModelsComponent final : public ICustomModelsComponent, public Player
 			return false;
 		}
 
-		if (type == ModelType::Skin && !(id > 20000 && id <= 30000))
+		if (type == ModelType::Skin && !(id >= MIN_CUSTOM_SKIN_ID && id <= MAX_CUSTOM_SKIN_ID))
 			return false;
-		else if (type == ModelType::Object && !(id >= -30000 && id <= -1000))
+		else if (type == ModelType::Object && !(id >= MIN_CUSTOM_OBJECT_ID && id <= MAX_CUSTOM_OBJECT_ID))
 			return false;
 		else if (baseModels.find(id) != baseModels.end())
 		{
@@ -648,7 +648,7 @@ class CustomModelsComponent final : public ICustomModelsComponent, public Player
 	{
 		// Check if model is default one (base).
 		// If so, there's no custom model to be returned.
-		if (baseModelIdOrInput >= 0 && baseModelIdOrInput <= 20000)
+		if (baseModelIdOrInput >= 0 && baseModelIdOrInput < MIN_CUSTOM_SKIN_ID)
 			return false;
 
 		// Check if input is valid custom model.