diff --git a/nse_nmaplib.cc b/nse_nmaplib.cc
index 94de0685f..eff9d6d09 100644
--- a/nse_nmaplib.cc
+++ b/nse_nmaplib.cc
@@ -939,7 +939,6 @@ int luaopen_nmap (lua_State *L)
     {"new_dnet", nseU_placeholder}, /* imported from nmap.dnet */
     {"get_interface_info", nseU_placeholder}, /* imported from nmap.dnet */
     {"new_socket", nseU_placeholder}, /* imported from nmap.socket */
-    {"sleep", nseU_placeholder}, /* imported from nmap.socket */
     {"mutex", nseU_placeholder}, /* placeholder */
     {"condvar", nseU_placeholder}, /* placeholder */
     {NULL, NULL}
@@ -965,9 +964,6 @@ int luaopen_nmap (lua_State *L)
   /* nmap.socket.new -> nmap.new_socket. */
   lua_getfield(L, -1, "new");
   lua_setfield(L, nmap_idx, "new_socket");
-  /* nmap.socket.sleep -> nmap.sleep. */
-  lua_getfield(L, -1, "sleep");
-  lua_setfield(L, nmap_idx, "sleep");
   /* Store nmap.socket; used by nse_main.lua. */
   lua_setfield(L, nmap_idx, "socket");
 
diff --git a/nselib/stdnse.lua b/nselib/stdnse.lua
index be251c9a1..87d34d31a 100644
--- a/nselib/stdnse.lua
+++ b/nselib/stdnse.lua
@@ -50,7 +50,7 @@ _ENV = require "strict" {};
 -- @class function
 -- @param t Time to sleep, in seconds.
 -- @usage stdnse.sleep(1.5)
-_ENV.sleep = nmap.sleep;
+_ENV.sleep = nmap.sleep.socket;
 
 ---
 -- Prints a formatted debug message if the current debugging level is greater