diff --git a/configure.in b/configure.in
index 7a0b90c1415..53f800f6c5e 100644
--- a/configure.in
+++ b/configure.in
@@ -2752,7 +2752,6 @@ fi
 
 AC_DEFINE(JS_THREADSAFE)
 AC_DEFINE(LAYERS)
-AC_DEFINE(NETSCAPE)
 
 if test "$MOZ_EDITOR"; then
   AC_DEFINE(NGEDITOR)