diff --git a/pyproject.toml b/pyproject.toml
index 36f67a7f0f29c998fb808f8c2fd6086b743a76fb..e4a6fac20989234d8cd845b72f1c7b54d7851af9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "h5schemas"
-version = "0.1.14"
+version = "0.1.15"
 description = "Add your description here"
 readme = "README.md"
 authors = [
diff --git a/src/h5schemas/detector/add_detector.py b/src/h5schemas/detector/add_detector.py
index fa85970a94ecfb6925af46926f2699c00348f6d6..420769eb3f133817980a21db2b6a3a14b5066d63 100644
--- a/src/h5schemas/detector/add_detector.py
+++ b/src/h5schemas/detector/add_detector.py
@@ -28,7 +28,7 @@ def add_detector_sample(
     dst.resize((dst.shape[0] + 1,))
     dst[-1,] =  detector_image_dimensions_px[1]
 
-    dst = h5_file["pixel_pitch_mm/v"]
+    dst = h5_file["pixel_pitch_mm/u"]
     dst.resize((dst.shape[0] + 1,))
     dst[-1,] =  pixel_pitch_mm[0]