diff --git a/include/Nazara/Graphics/Material.hpp b/include/Nazara/Graphics/Material.hpp
index c381beb3a..0f41e0f39 100644
--- a/include/Nazara/Graphics/Material.hpp
+++ b/include/Nazara/Graphics/Material.hpp
@@ -135,7 +135,7 @@ class NAZARA_API NzMaterial : public NzResource
 		struct ShaderInstance
 		{
 			const NzShader* shader;
-			NzUberShaderInstance* uberInstance;
+			NzUberShaderInstance* uberInstance = nullptr;
 			int uniforms[nzMaterialUniform_Max+1];
 		};