diff --git a/CHANGES.md b/CHANGES.md
index c47e4d54..39d5bc0d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -10,7 +10,8 @@
 - FIX: Fix iceye product when extent file (*.kml) not found ([#135](https://github.com/sertit/eoreader/pull/135))
 - FIX: Add missing `pystac[validation]` in setup.py
 - FIX: Handle RCM and RS2 products that doesn't bundle their extent in a KML file ([#155](https://github.com/sertit/eoreader/issues/155))
-- CI: Fix S3 endpoint management with `sertit==1.37`
+- OPTIM: Search correctly nested metadata in the Reader (without accidentally using a recursive glob)
+- CI: Fix S3 endpoint management with `sertit>=1.37`
 
 ## 0.21.1 (2024-04-03)
 
diff --git a/eoreader/reader.py b/eoreader/reader.py
index d4d474ad..888ec37a 100644
--- a/eoreader/reader.py
+++ b/eoreader/reader.py
@@ -301,7 +301,7 @@ class Constellation(ListEnum):
         # File that can be found at any level (product/**/file)
         "regex": r".*s1[ab]-(iw|ew|sm|wv|s\d)\d*-(raw|slc|grd|ocn)-[hv]{2}-\d{8}t\d{6}-\d{8}t\d{6}-\d{6}-\w{6}-\d{3}(-cog|)\.xml",
     },
-    Constellation.S2: {"nested": 3, "regex": r"MTD_TL.xml"},
+    Constellation.S2: {"nested": 2, "regex": r"MTD_TL.xml"},
     Constellation.S2_E84: rf"{CONSTELLATION_REGEX[Constellation.S2_E84]}\.json",
     Constellation.S2_THEIA: rf"{CONSTELLATION_REGEX[Constellation.S2_THEIA]}_MTD_ALL\.xml",
     Constellation.S3_OLCI: r"Oa\d{2}_radiance.nc",
@@ -807,7 +807,7 @@ def valid_mtd(
                 )
             else:
                 nested_wildcard = "/".join(["*" for _ in range(nested)])
-                prod_files = list(product_path.glob(f"*{nested_wildcard}/*.*"))
+                prod_files = list(product_path.glob(f"{nested_wildcard}/*.*"))
 
         # Archive
         else: