diff --git a/mozilla/js2/tests/cpp/js2_shell.cpp b/mozilla/js2/tests/cpp/js2_shell.cpp
index f7a632d643b..a38bc2c1e1b 100644
--- a/mozilla/js2/tests/cpp/js2_shell.cpp
+++ b/mozilla/js2/tests/cpp/js2_shell.cpp
@@ -22,6 +22,11 @@
 // JS2 shell.
 //
 
+#ifdef _WIN32
+ // Turn off warnings about identifiers too long in browser information
+ #pragma warning(disable: 4786)
+#endif
+
 #if 1
 #define DEBUGGER_FOO
 #define INTERPRET_INPUT