diff --git a/toolkit/xre/nsWindowsDllBlocklist.cpp b/toolkit/xre/nsWindowsDllBlocklist.cpp
index b61ac4ab875..a7667c597c0 100644
--- a/toolkit/xre/nsWindowsDllBlocklist.cpp
+++ b/toolkit/xre/nsWindowsDllBlocklist.cpp
@@ -105,6 +105,9 @@ static DllBlockInfo sWindowsDllBlocklist[] = {
   {"rf-firefox.dll", MAKE_VERSION(7,6,1,0)},
   {"roboform.dll", MAKE_VERSION(7,6,1,0)},
 
+  // Topcrash with Babylon Toolbar on FF16+
+  {"babyfox.dll", ALL_VERSIONS},
+
   // leave these two in always for tests
   { "mozdllblockingtest.dll", ALL_VERSIONS },
   { "mozdllblockingtest_versioned.dll", 0x0000000400000000ULL },