diff --git a/include/Nazara/Math/Matrix4.inl b/include/Nazara/Math/Matrix4.inl
index 87e34ef24..962f9746c 100644
--- a/include/Nazara/Math/Matrix4.inl
+++ b/include/Nazara/Math/Matrix4.inl
@@ -117,14 +117,14 @@ NzMatrix4<T>& NzMatrix4<T>::ConcatenateAffine(const NzMatrix4& matrix)
 	#ifdef NAZARA_DEBUG
 	if (!IsAffine())
 	{
-		NazaraError("First matrix not affine");
-		return *this;
+		NazaraWarning("First matrix not affine");
+		return Concatenate(matrix);
 	}
 
 	if (!matrix.IsAffine())
 	{
-		NazaraError("Second matrix not affine");
-		return *this;
+		NazaraWarning("Second matrix not affine");
+		return Concatenate(matrix);
 	}
 	#endif