diff --git a/src/calng/LpdCorrection.py b/src/calng/LpdCorrection.py
index 9472184737cd1aa309bcb468154b58eedb113992..c159132cb659bc5031a26bdca66f81eab0b1ad65 100644
--- a/src/calng/LpdCorrection.py
+++ b/src/calng/LpdCorrection.py
@@ -108,7 +108,7 @@ class LpdGpuRunner(base_gpu.BaseGpuRunner):
         # constant type → transpose order, GPU buffer
         other_constant_loading = {
             LpdConstants.Offset: ((2, 1, 0, 3), self.offset_map_gpu),
-            LpdConstants.GainAmpMap: ((2, 1, 0, 3), self.gain_amp_map_gpu),
+            LpdConstants.GainAmpMap: ((2, 0, 1, 3), self.gain_amp_map_gpu),
             LpdConstants.FFMap: ((2, 0, 1, 3), self.flatfield_map_gpu),
             LpdConstants.RelativeGain: ((2, 1, 0, 3), self.rel_gain_slopes_map_gpu),
         }