diff --git a/README.md b/README.md
index 504b5fb..e4fc4c4 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,7 @@ Allowed families are defined in `lib/asset-naming.ts`: `color`, `diffuse`, `roug
 Valid internal examples: `color.png`, `diffuse_lampe.png`, `normal_cable1.png`, `opacity_lampe.png`.
 Accepted export examples: `lampe_baseColor.png`, `lampe_base_color.png`, `lampe_normal_opengl.png`, `lampe_metallic.png`, `lampe_occlusionRoughnessMetallic.png`, `lampe_mixed_ao.png`.
 Git normalization examples: `lampe_baseColor.png` becomes `color_lampe.png`, `lampe_metallic.png` becomes `metalness_lampe.png`, `lampe_occlusionRoughnessMetallic.png` becomes `orm_lampe.png`, and `lampe_mixed_ao.png` becomes `ao_lampe.png`.
+When several exported textures would normalize to the same filename, all colliding variants keep their original names to avoid data loss. For example, `chap_normal.png` and `chap_normal_opengl.png` are both kept as-is.
 Invalid or unknown asset names still block the upload.
 
 ### Upload flow: Drive first, then Git