diff --git a/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2.tif b/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2.tif
index 2916c1e..8f1396d 100644
Binary files a/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2.tif and b/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2.tif differ
diff --git a/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2_info.md b/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2_info.md
index 04e8258..51da43b 100644
--- a/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2_info.md
+++ b/rasterio_generated/fixtures/uint16_1band_lzw_block128_predictor2_info.md
@@ -36,6 +36,7 @@ Image Structure
     COMPRESSION: LZW
     INTERLEAVE: BAND
     OVERVIEW_RESAMPLING: BILINEAR
+    PREDICTOR: 2
 
 Band 1
     ColorInterp: gray
diff --git a/rasterio_generated/fixtures/uint16_1band_scale_offset.tif b/rasterio_generated/fixtures/uint16_1band_scale_offset.tif
index ad0c394..a7b58e0 100644
Binary files a/rasterio_generated/fixtures/uint16_1band_scale_offset.tif and b/rasterio_generated/fixtures/uint16_1band_scale_offset.tif differ
diff --git a/rasterio_generated/fixtures/uint16_1band_scale_offset_info.md b/rasterio_generated/fixtures/uint16_1band_scale_offset_info.md
index 2262855..ab49d50 100644
--- a/rasterio_generated/fixtures/uint16_1band_scale_offset_info.md
+++ b/rasterio_generated/fixtures/uint16_1band_scale_offset_info.md
@@ -36,6 +36,7 @@ Image Structure
     COMPRESSION: DEFLATE
     INTERLEAVE: BAND
     OVERVIEW_RESAMPLING: BILINEAR
+    PREDICTOR: 2
 
 Band 1
     ColorInterp: gray
diff --git a/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2.tif b/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2.tif
index 8183855..22988ab 100644
Binary files a/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2.tif and b/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2.tif differ
diff --git a/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2_info.md b/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2_info.md
index 5762591..395d82f 100644
--- a/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2_info.md
+++ b/rasterio_generated/fixtures/uint8_1band_deflate_block128_unaligned_predictor2_info.md
@@ -36,6 +36,7 @@ Image Structure
     COMPRESSION: DEFLATE
     INTERLEAVE: BAND
     OVERVIEW_RESAMPLING: BILINEAR
+    PREDICTOR: 2
 
 Band 1
     ColorInterp: gray
diff --git a/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2.tif b/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2.tif
index 811eb4e..6002056 100644
Binary files a/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2.tif and b/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2.tif differ
diff --git a/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2_info.md b/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2_info.md
index b553985..5c7ed8a 100644
--- a/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2_info.md
+++ b/rasterio_generated/fixtures/uint8_1band_lzw_block64_predictor2_info.md
@@ -36,6 +36,7 @@ Image Structure
     COMPRESSION: LZW
     INTERLEAVE: BAND
     OVERVIEW_RESAMPLING: BILINEAR
+    PREDICTOR: 2
 
 Band 1
     ColorInterp: gray
diff --git a/rasterio_generated/write_utils.py b/rasterio_generated/write_utils.py
index 30f01ca..49691e6 100644
--- a/rasterio_generated/write_utils.py
+++ b/rasterio_generated/write_utils.py
@@ -101,9 +101,6 @@ def write_cog(
         "transform": transform,
     }
 
-    if predictor is not None:
-        src_profile["predictor"] = predictor
-
     if nodata is not None:
         src_profile["nodata"] = nodata
 
@@ -169,5 +166,8 @@ def write_cog(
                 if compress_level is not None:
                     cog_profile["level"] = compress_level
 
+                if predictor is not None:
+                    cog_profile["predictor"] = predictor
+
                 # Copy to output path
                 copy(mem, path, copy_src_overviews=True, **cog_profile)
diff --git a/tests/test_predictor.py b/tests/test_predictor.py
new file mode 100644
index 0000000..e79b226
--- /dev/null
+++ b/tests/test_predictor.py
@@ -0,0 +1,26 @@
+"""Check that fixtures generated with a predictor carry it on every IFD.
+
+write_cog once set the predictor on its in-memory dataset only, so the COGs it
+wrote silently used no predictor.
+"""
+
+from pathlib import Path
+
+import pytest
+import tifffile
+
+FIXTURES_DIR = Path(__file__).parent.parent / "rasterio_generated" / "fixtures"
+
+
+@pytest.mark.parametrize(
+    "name",
+    [
+        "uint16_1band_lzw_block128_predictor2",
+        "uint16_1band_scale_offset",
+        "uint8_1band_deflate_block128_unaligned_predictor2",
+        "uint8_1band_lzw_block64_predictor2",
+    ],
+)
+def test_predictor_2(name: str):
+    with tifffile.TiffFile(FIXTURES_DIR / f"{name}.tif") as tif:
+        assert [int(page.predictor) for page in tif.pages] == [2] * len(tif.pages)