diff --git a/batch/python/gdal_utils.py b/batch/python/gdal_utils.py
index fa498791..c3b0b8a1 100644
--- a/batch/python/gdal_utils.py
+++ b/batch/python/gdal_utils.py
@@ -66,3 +66,10 @@ def run_gdal_subcommand(cmd: List[str], env: Optional[Dict] = None) -> Tuple[str
             raise GDALError(e)
 
     return o, e
+
+
+def from_gdal_data_type(data_type: str) -> str:
+    if data_type == "Byte":
+        return "uint8"
+    else:
+        return data_type.lower()
diff --git a/batch/python/tiles_geojson.py b/batch/python/tiles_geojson.py
index 9004f02a..653da89e 100644
--- a/batch/python/tiles_geojson.py
+++ b/batch/python/tiles_geojson.py
@@ -9,7 +9,7 @@
 from shapely.ops import unary_union
 
 from errors import GDALError
-from gdal_utils import run_gdal_subcommand
+from gdal_utils import from_gdal_data_type, run_gdal_subcommand
 
 
 def to_4326(crs: CRS, x: float, y: float) -> Tuple[float, float]:
@@ -26,7 +26,11 @@ def extract_metadata_from_gdalinfo(gdalinfo_json: Dict[str, Any]) -> Dict[str, A
 
     bands = [
         {
-            "data_type": band.get("type", None),
+            "data_type": (
+                from_gdal_data_type(band.get("type"))
+                if band.get("type") is not None
+                else None
+            ),
             "no_data": (
                 "nan" if (
                     band.get("noDataValue", None) is not None