diff --git a/resources/ImportExport b/resources/ImportExport
index 574e0e2e3..15bf9c78c 100644
--- a/resources/ImportExport
+++ b/resources/ImportExport
@@ -1,14 +1,14 @@
 Import: BREP|IGES|STEP
 Export: BREP|IGES|STEP
 
-BREP.Import: libBREPImport.so
-BREP.Export: libBREPExport.so
+BREP.Import: libBREPImport
+BREP.Export: libBREPExport
 BREP.Pattern: BREP Files ( *.brep )
 
-IGES.Import: libIGESImport.so
-IGES.Export: libIGESExport.so
+IGES.Import: libIGESImport
+IGES.Export: libIGESExport
 IGES.Pattern: IGES Files ( *.iges *.igs )
 
-STEP.Import: libSTEPImport.so
-STEP.Export: libSTEPExport.so
+STEP.Import: libSTEPImport
+STEP.Export: libSTEPExport
 STEP.Pattern: STEP Files ( *.step *.stp )
diff --git a/src/GEOMImpl/GEOMImpl_IInsertOperations.cxx b/src/GEOMImpl/GEOMImpl_IInsertOperations.cxx
index 6aee3f044..8e12231cf 100644
--- a/src/GEOMImpl/GEOMImpl_IInsertOperations.cxx
+++ b/src/GEOMImpl/GEOMImpl_IInsertOperations.cxx
@@ -352,7 +352,12 @@ Standard_Boolean GEOMImpl_IInsertOperations::IsSupported
       aKey += ".";
       aKey += aMode;
       if (myResMgr->Find(aKey.ToCString())) {
-        TCollection_AsciiString aLibName (myResMgr->Value(aKey.ToCString()));
+        TCollection_AsciiString aLibName (myResMgr->Value(aKey.ToCString()));        
+#ifndef WNT
+        aLibName += ".so";     
+#else
+        aLibName += ".dll";
+#endif
         theLibName = new TCollection_HAsciiString (aLibName);
         return Standard_True;
       }