diff --git a/contrib/src/xrc/xmlres.cpp b/contrib/src/xrc/xmlres.cpp
index dc9a434c95..52d9881e13 100644
--- a/contrib/src/xrc/xmlres.cpp
+++ b/contrib/src/xrc/xmlres.cpp
@@ -121,7 +121,8 @@ bool wxXmlResource::Load(const wxString& filemask)
         if (fnd.Lower().Matches(wxT("*.zip")) ||
             fnd.Lower().Matches(wxT("*.xrs")))
         {
-            rt = rt && Load(fnd + wxT("#zip:*.xrc"));
+            wxString url(wxFileSystem::FileNameToURL(fnd));
+            rt = rt && Load(url + wxT("#zip:*.xrc"));
         }
         else
 #endif
diff --git a/docs/toback24.txt b/docs/toback24.txt
index 72859d77f1..24593642f9 100644
--- a/docs/toback24.txt
+++ b/docs/toback24.txt
@@ -165,6 +165,10 @@ Must be modified to be binary compatible before backporting!
 Checking in xmlres.cpp;
 /pack/cvsroots/wxwindows/wxWindows/contrib/src/xrc/xmlres.cpp,v  <--  xmlres.cpp
 new revision: 1.27; previous revision: 1.26
+done
+
+(also revision 1.30->1.31 of xmlres.cpp !!!)
+
 Checking in xmlres.h;
 /pack/cvsroots/wxwindows/wxWindows/contrib/include/wx/xrc/xmlres.h,v  <--  xmlres.h
 new revision: 1.22; previous revision: 1.21
diff --git a/src/xrc/xmlres.cpp b/src/xrc/xmlres.cpp
index dc9a434c95..52d9881e13 100644
--- a/src/xrc/xmlres.cpp
+++ b/src/xrc/xmlres.cpp
@@ -121,7 +121,8 @@ bool wxXmlResource::Load(const wxString& filemask)
         if (fnd.Lower().Matches(wxT("*.zip")) ||
             fnd.Lower().Matches(wxT("*.xrs")))
         {
-            rt = rt && Load(fnd + wxT("#zip:*.xrc"));
+            wxString url(wxFileSystem::FileNameToURL(fnd));
+            rt = rt && Load(url + wxT("#zip:*.xrc"));
         }
         else
 #endif