diff --git a/Geo/CellComplex.cpp b/Geo/CellComplex.cpp
index 9159139db0b53c5fd4a3bd2849dc15d4578cf226..79e3b489c931400867c41a1e1c31a7d91a7d9563 100644
--- a/Geo/CellComplex.cpp
+++ b/Geo/CellComplex.cpp
@@ -370,7 +370,7 @@ int CellComplex::reduction(int dim, int omit,
       }
 
       if(getSize(dim) == 0 || getSize(dim-1) == 0) break;
-      if(cit != lastCell(dim)) cit++;
+      if(cit != lastCell(dim-1)) cit++;
     }
   }
   _reduced = true;