diff --git a/configure.ac b/configure.ac
index 242124205..b3b1a8e48 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2430,6 +2430,7 @@ if test "$LUABIN"; then
   if test "$LUA_VERSION" = "5.0"; then
     LUALINK="$LUALINK -llualib"
   fi
+  LUALINK="$LUALINK -pthread"
 
   LIBS=$lua_save_LIBS	# restore LIBS
 fi