diff --git a/EXE_Exchange.cpp b/EXE_Exchange.cpp
index fa52d7a..8763f3e 100644
--- a/EXE_Exchange.cpp
+++ b/EXE_Exchange.cpp
@@ -86,6 +86,8 @@ ExeGetFileType( const string& sFilePath)
       return FT_JT ;
    else if ( sFileExt == "WRL"  ||  sFileExt == "WRZ")
       return FT_VRML ;
+   else if ( sFileExt == "C3D")
+      return FT_C3D ;
    else if ( sFileExt == "TSC")
       return FT_TSC ;
    else if ( sFileExt == "LUA")
@@ -309,8 +311,9 @@ ExeAdvancedImport( const string& sFilePath, double dToler)
         nFileType != FT_STEP   &&
         nFileType != FT_ACIS   &&
         nFileType != FT_PARASOLID   &&
-        nFileType != FT_JT   &&
-        nFileType != FT_VRML) {
+        nFileType != FT_JT  &&
+        nFileType != FT_VRML  &&
+        nFileType != FT_C3D) {
       string sOut = "Error unknown format " + sFilePath ; 
       LOG_ERROR( GetLogger(), sOut.c_str())
       return false ;