diff --git a/dbaccess/source/ui/dlg/adodatalinks.cxx b/dbaccess/source/ui/dlg/adodatalinks.cxx
index 2613364bc8ef..f2a18c8c8acc 100644
--- a/dbaccess/source/ui/dlg/adodatalinks.cxx
+++ b/dbaccess/source/ui/dlg/adodatalinks.cxx
@@ -185,7 +185,7 @@ OUString PromptEdit(long hWnd, OUString const & connstr)
 
 }
 
-OUString getAdoDatalink(long hWnd,OUString& oldLink)
+OUString getAdoDatalink(long hWnd,OUString const & oldLink)
 {
     OUString dataLink;
     if (!oldLink.isEmpty())
diff --git a/dbaccess/source/ui/dlg/adodatalinks.hxx b/dbaccess/source/ui/dlg/adodatalinks.hxx
index 11a0da006e61..85182223d31e 100644
--- a/dbaccess/source/ui/dlg/adodatalinks.hxx
+++ b/dbaccess/source/ui/dlg/adodatalinks.hxx
@@ -23,6 +23,6 @@
 #include <osl/module.h>
 #include "commontypes.hxx"
 
-OUString getAdoDatalink(long hWnd,OUString& oldLink);
+OUString getAdoDatalink(long hWnd,OUString const & oldLink);
 #endif
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */