diff --git a/src/calng/DsscCorrection.py b/src/calng/DsscCorrection.py
index 4df05a25d434ae86237ad9ccd2a1bca5ef1715d4..865660755d9179318b649d0527c294ff4aa04f17 100644
--- a/src/calng/DsscCorrection.py
+++ b/src/calng/DsscCorrection.py
@@ -232,7 +232,8 @@ class DsscCorrection(BaseCorrection):
                 return
 
         try:
-            self.kernel_runner.load_data(image_data)
+            # drop the singleton dimension for kernel runner
+            self.kernel_runner.load_data(image_data[:, 0])
         except ValueError as e:
             self.log_status_warn(f"Failed to load data: {e}")
             return