diff --git a/python/lsst/daf/butler/configs/storageClasses.yaml b/python/lsst/daf/butler/configs/storageClasses.yaml
index 57ebedf378..680937542c 100644
--- a/python/lsst/daf/butler/configs/storageClasses.yaml
+++ b/python/lsst/daf/butler/configs/storageClasses.yaml
@@ -248,7 +248,7 @@ storageClasses:
   Linearizer:
     pytype: lsst.ip.isr.Linearizer
   FiberSpectrum:
-    pytype: lsst.obs.fiberSpectrograph.FiberSpectrum
+    pytype: lsst.obs.fiberspectrograph.FiberSpectrum
   PhotonTransferCurveDataset:
     pytype: lsst.ip.isr.PhotonTransferCurveDataset
   StrayLightData: