diff --git a/mozilla/browser/components/shell/src/nsWindowsShellService.cpp b/mozilla/browser/components/shell/src/nsWindowsShellService.cpp
index 672014432e8..9c30bcc50ea 100644
--- a/mozilla/browser/components/shell/src/nsWindowsShellService.cpp
+++ b/mozilla/browser/components/shell/src/nsWindowsShellService.cpp
@@ -242,6 +242,10 @@ static SETTING gSettings[] = {
   { MAKE_KEY_NAME2(CLS, "CHROME", SOP), "", VAL_OPEN, PATH_SUBSTITUTION | NON_ESSENTIAL },
 
   // DDE settings
+  { MAKE_KEY_NAME2(CLS, CLS_HTML, DDE), "", DDE_COMMAND, NO_SUBSTITUTION },
+  { MAKE_KEY_NAME3(CLS, CLS_HTML, DDE, "Application"), "", DDE_NAME, NO_SUBSTITUTION },
+  { MAKE_KEY_NAME3(CLS, CLS_HTML, DDE, "Topic"), "", "WWW_OpenURL", NO_SUBSTITUTION },
+  { MAKE_KEY_NAME3(CLS, CLS_HTML, DDE, "ifexec"), "", DDE_IFEXEC, NO_SUBSTITUTION },
   { MAKE_KEY_NAME2(CLS, "HTTP", DDE), "", DDE_COMMAND, NO_SUBSTITUTION },
   { MAKE_KEY_NAME3(CLS, "HTTP", DDE, "Application"), "", DDE_NAME, NO_SUBSTITUTION },
   { MAKE_KEY_NAME3(CLS, "HTTP", DDE, "Topic"), "", "WWW_OpenURL", NO_SUBSTITUTION },