diff --git a/EExImport3dm.h b/EExImport3dm.h
index 5465f8a..353d859 100644
--- a/EExImport3dm.h
+++ b/EExImport3dm.h
@@ -28,7 +28,7 @@ class __declspec( novtable) IImport3dm
 {
 public :
    virtual ~IImport3dm( void) {} 
-   virtual bool Import( const std::string& sFile, IGeomDB* pGDB, int nIdGroup, double dScaleFactor = 1,
+   virtual bool Import( const std::string& sFile, IGeomDB* pGDB, int nIdGroup,
                         double dTextHeight = 2.0, double dExtLine = 5.0, double dArrLen = 5.0, double dTextDist = 2.0,
                         bool bLenIsMM = true, int nDecDig = -2, std::string sFont = "ModernPropS.Nfe") = 0 ;
 } ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 3854ee0..f43a52e 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -121,7 +121,7 @@ EXE_EXPORT bool ExeImportDxf( const std::string& sFilePath, double dScaleFactor)
 EXE_EXPORT bool ExeImportPnt( const std::string& sFilePath, int nFlag) ;
 EXE_EXPORT bool ExeImportStl( const std::string& sFilePath, double dScaleFactor) ;
 EXE_EXPORT bool ExeImport3MF( const std::string& sFilePath) ;
-EXE_EXPORT bool ExeImport3dm( const std::string& sFilePath, double dScaleFactor) ;
+EXE_EXPORT bool ExeImport3dm( const std::string& sFilePath) ;
 EXE_EXPORT bool ExeAdvancedImportIsEnabled( void) ;
 EXE_EXPORT bool ExeAdvancedImport( const std::string& sFilePath, double dToler = 0.1) ;
 EXE_EXPORT bool ExeExportDxf( int nId, const std::string& sFilePath, int nFlag = 1, int nFilter = 393) ;