diff --git a/src/ctapipe/calib/camera/extractor.py b/src/ctapipe/calib/camera/extractor.py
index 4c8f49d1f38..0896562424f 100644
--- a/src/ctapipe/calib/camera/extractor.py
+++ b/src/ctapipe/calib/camera/extractor.py
@@ -63,7 +63,7 @@ def __call__(
 
         Parameters
         ----------
-        dl1_table : ndarray
+        dl1_table : astropy.table.QTable
             dl1 table with images and timestamps stored in a numpy array of shape
             (n_images, n_channels, n_pix).
         masked_pixels_of_sample : ndarray