diff --git a/src/common/utilscmn.cpp b/src/common/utilscmn.cpp
index 57f68bc340..3186968dfc 100644
--- a/src/common/utilscmn.cpp
+++ b/src/common/utilscmn.cpp
@@ -964,7 +964,7 @@ bool wxLaunchDefaultApplication(const wxString& document, int flags)
                                       (
                                         NULL,           // parent window
                                         _T("open"),
-                                        document,
+                                        document.wx_str(),
                                         NULL,           // parameters
                                         NULL,           // working directory
                                         SW_SHOWDEFAULT