diff --git a/examples/MeshInfos/main.cpp b/examples/MeshInfos/main.cpp
index 73864abaa..e95a2a4c2 100644
--- a/examples/MeshInfos/main.cpp
+++ b/examples/MeshInfos/main.cpp
@@ -173,12 +173,7 @@ int main()
 
 				Nz::String data;
 				if (!matData.GetStringParameter(Nz::MaterialData::FilePath, &data))
-				{
-					if (matData.HasParameter(Nz::MaterialData::CustomDefined))
-						data = "<Custom>";
-					else
-						data = "<No data>";
-				}
+					data = "<Custom>";
 
 				std::cout << "\t" << (i+1) << ": " << data << std::endl;
 			}
diff --git a/include/Nazara/Utility/MaterialData.hpp b/include/Nazara/Utility/MaterialData.hpp
index 66df97689..0c1e28cdd 100644
--- a/include/Nazara/Utility/MaterialData.hpp
+++ b/include/Nazara/Utility/MaterialData.hpp
@@ -23,7 +23,6 @@ namespace Nz
 		static constexpr const char* BackFaceStencilZFail     = "MatBackFaceStencilZFail";
 		static constexpr const char* Blending                 = "MatBlending";
 		static constexpr const char* CullingSide              = "MatCullingSide";
-		static constexpr const char* CustomDefined            = "MatCustomDefined";
 		static constexpr const char* ColorWrite               = "MatColorWrite";
 		static constexpr const char* DepthBuffer              = "MatDepthBuffer";
 		static constexpr const char* DepthFunc                = "MatDepthfunc";
diff --git a/plugins/Assimp/Plugin.cpp b/plugins/Assimp/Plugin.cpp
index 312bbf48e..39b645c65 100644
--- a/plugins/Assimp/Plugin.cpp
+++ b/plugins/Assimp/Plugin.cpp
@@ -237,8 +237,6 @@ bool Load(Mesh* mesh, Stream& stream, const MeshParams& parameters)
 						aiColor4D color;
 						if (aiGetMaterialColor(aiMat, aiKey, aiType, aiIndex, &color) == aiReturn_SUCCESS)
 						{
-							matData.SetParameter(MaterialData::CustomDefined);
-
 							matData.SetParameter(colorKey, Color(static_cast<UInt8>(color.r * 255), static_cast<UInt8>(color.g * 255), static_cast<UInt8>(color.b * 255), static_cast<UInt8>(color.a * 255)));
 						}
 					};
@@ -249,7 +247,6 @@ bool Load(Mesh* mesh, Stream& stream, const MeshParams& parameters)
 						aiTextureMapMode mapMode[3];
 						if (aiGetMaterialTexture(aiMat, aiType, 0, &path, nullptr, nullptr, nullptr, nullptr, &mapMode[0], nullptr) == aiReturn_SUCCESS)
 						{
-							matData.SetParameter(MaterialData::CustomDefined);
 							matData.SetParameter(textureKey, stream.GetDirectory() + String(path.data, path.length));
 
 							if (wrapKey)
diff --git a/src/Nazara/Graphics/Formats/MeshLoader.cpp b/src/Nazara/Graphics/Formats/MeshLoader.cpp
index 6769072bb..38f836e90 100644
--- a/src/Nazara/Graphics/Formats/MeshLoader.cpp
+++ b/src/Nazara/Graphics/Formats/MeshLoader.cpp
@@ -39,7 +39,7 @@ namespace Nz
 					else
 						NazaraWarning("Failed to load material from file " + String::Number(i));
 				}
-				else if (matData.HasParameter(MaterialData::CustomDefined))
+				else
 				{
 					MaterialRef material = Material::New();
 					material->BuildFromParameters(matData, parameters.material);
diff --git a/src/Nazara/Utility/Formats/MD2Loader.cpp b/src/Nazara/Utility/Formats/MD2Loader.cpp
index c61dffd09..dde203482 100644
--- a/src/Nazara/Utility/Formats/MD2Loader.cpp
+++ b/src/Nazara/Utility/Formats/MD2Loader.cpp
@@ -102,7 +102,6 @@ namespace Nz
 						stream.Read(skin, 68*sizeof(char));
 
 						ParameterList matData;
-						matData.SetParameter(MaterialData::CustomDefined);
 						matData.SetParameter(MaterialData::DiffuseTexturePath, baseDir + skin);
 
 						mesh->SetMaterialData(i, std::move(matData));
diff --git a/src/Nazara/Utility/Formats/OBJLoader.cpp b/src/Nazara/Utility/Formats/OBJLoader.cpp
index 1b1835b2b..405c845ea 100644
--- a/src/Nazara/Utility/Formats/OBJLoader.cpp
+++ b/src/Nazara/Utility/Formats/OBJLoader.cpp
@@ -73,8 +73,6 @@ namespace Nz
 				{
 					ParameterList data;
 
-					data.SetParameter(MaterialData::CustomDefined);
-
 					UInt8 alphaValue = static_cast<UInt8>(mtlMat->alpha*255.f);
 
 					Color ambientColor(mtlMat->ambient);
diff --git a/src/Nazara/Utility/Formats/OBJSaver.cpp b/src/Nazara/Utility/Formats/OBJSaver.cpp
index baf54e44b..a7a2cda0b 100644
--- a/src/Nazara/Utility/Formats/OBJSaver.cpp
+++ b/src/Nazara/Utility/Formats/OBJSaver.cpp
@@ -121,7 +121,9 @@ namespace Nz
 				MTLParser::Material* material = mtlFormat.AddMaterial(name);
 
 				String strVal;
-				if (matData.HasParameter(MaterialData::CustomDefined))
+				if (matData.GetStringParameter(MaterialData::FilePath, &strVal))
+					material->diffuseMap = strVal;
+				else
 				{
 					Color colorVal;
 					float fValue;
@@ -147,8 +149,6 @@ namespace Nz
 					if (matData.GetStringParameter(MaterialData::SpecularTexturePath, &strVal))
 						material->specularMap = strVal;
 				}
-				else if (matData.GetStringParameter(MaterialData::FilePath, &strVal))
-					material->diffuseMap = strVal;
 			}
 
 			// Meshes