diff --git a/Detectors/MUON/MCH/Mapping/Impl4/src/GenCathodeSegmentationCreatorForSegType0.cxx b/Detectors/MUON/MCH/Mapping/Impl4/src/GenCathodeSegmentationCreatorForSegType0.cxx
index 0e4f0bc6c5db1..dfdfb99e2d790 100644
--- a/Detectors/MUON/MCH/Mapping/Impl4/src/GenCathodeSegmentationCreatorForSegType0.cxx
+++ b/Detectors/MUON/MCH/Mapping/Impl4/src/GenCathodeSegmentationCreatorForSegType0.cxx
@@ -269,10 +269,10 @@ CathodeSegmentation* createSegType0(bool isBendingPlane)
        /* 1BD */ {4, 16, {61, 9, 63, 59, 14, 7, 8, 16, 58, 62, 21, 57, 54, 19, 60, 10, 5, 12, 56, 52, 2, 6, 55, 1, 44, 51, 0, 48, 11, 4, 46, 3, 35, 36, 42, 13, 17, 33, 15, 34, 23, 32, 20, 18, 24, 43, 22, 37, 49, 25, 45, 38, 27, 28, 47, 26, 53, 41, 29, 50, 30, 31, 40, 39}},
        /* 1BE */ {3, 16, {61, 9, 63, 14, 7, 8, 58, 62, 21, 54, 19, 60, 5, 12, 56, 2, 6, 55, 44, 51, 0, 11, 4, 46, 35, 36, 42, 17, 33, 15, 23, 32, 20, 24, 43, 22, 49, 25, 45, 27, 28, 47, 53, 41, 29, 30, 31, 40}},
        /* 1BF */ {3, 21, {19, 9, 60, 14, 62, 59, 58, 63, 56, 6, 7, 57, 54, 8, 10, 5, 61, 52, 51, 16, 0, 2, 12, 48, 44, 55, 3, 4, 1, 42, 36, 46, 13, 35, 11, 15, 17, 34, 18, 23, 32, 33, 38, 20, 37, 43, 25, 22, 47, 26, 45, 49, 28, 24, 27, 39, 50, 41, 40, 29, 31, 30, 53}},
-       /* 1BG */ {3, 16, {61, 9, 63, 14, 7, 8, 58, 62, 21, 54, 19, 60, 5, 12, 56, 2, 6, 55, 44, 51, 0, 11, 4, 46, 35, 36, 42, 17, 33, 15, 23, 32, 20, 24, 43, 22, 49, 25, 45, 27, 28, 47, 53, 41, 29, 30, 31, 40}},
+       /* 1BG */ {3, 16, {7, 9, 63, 61, 62, 60, 19, 21, 16, 58, 56, 57, 12, 6, 55, 54, 52, 0, 51, 48, 46, 2, 4, 42, 44, 13, 35, 11, 34, 33, 17, 32, 20, 23, 22, 43, 25, 47, 45, 49, 50, 27, 31, 29, 53, 40, 30, 39}},
        /* 1BH */ {3, 16, {7, 9, 63, 61, 62, 60, 19, 21, 16, 58, 56, 57, 12, 6, 55, 54, 52, 0, 51, 48, 46, 2, 4, 42, 44, 13, 35, 11, 34, 33, 17, 32, 20, 23, 22, 43, 25, 47, 45, 49, 50, 27, 31, 29, -1, 40, 30, -1}},
        /* 1BI */ {2, 16, {7, 9, 61, 62, 19, 21, 58, 56, 12, 6, 54, 52, 51, 48, 2, 4, 44, 13, 11, 34, 17, 32, 23, 22, 25, 47, 49, 50, 31, 29, 40, 30}},
-       /* 1BG */ {1, 16, {59, 16, 57, 10, 52, 1, 48, 3, 13, 34, 18, 37, 38, 26, 50, 39}}},
+       /* 1BG */ {1, 16, {8, 59, 14, 10, 5, 1, 3, 36, 15, 18, 37, 38, 24, 26, 28, 41}}},
       /* PS */
       {{0.63, 0.42},
        {0.84, 0.42},