diff --git a/EXeExecutor.h b/EXeExecutor.h
index cd9eb2a..c62d889 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -1536,7 +1536,7 @@ EXE_EXPORT bool ExeTrimmingInterpolateSyncLines( int nParentId, int nSync1Id, in
 EXE_EXPORT bool ExeTrimmingGetSurfBzSyncPoints( int nParentId, int nEdge1Id, int nEdge2Id, double dLinTol,
                                                 double dAngTol, int nLineNbr, bool bShowOnCorners,
                                                 int& nFirstId, int& nCount) ;
-EXE_EXPORT bool ExeTrimmingGetToolOrientationLines( int nParentId, int nMainEdgeId, int nOtherEdgeId, int nSyncLayerId,
+EXE_EXPORT bool ExeTrimmingGetToolOrientationLines( int nParentId, int nMainEdgeId, int nOtherEdgeId, bool bMainIsFirstBorder, int nSyncLayerId,
                                                     int nLineSId, int nLineEId, double dThetaStart, double dPhiStart,
                                                     double dThetaEnd, double dPhiEnd, double dInterpLenS, double dInterpLenE, double dLinTol,
                                                     int& nInterpStartId, int& nStartId, int& nEndId, int& nInterpEndId) ;