diff --git a/src/luaconsole.c b/src/luaconsole.c
index 77a35fd9c..2a2519c0c 100644
--- a/src/luaconsole.c
+++ b/src/luaconsole.c
@@ -63,6 +63,7 @@ void luacon_open(){
 		{"setfpscap",&luatpt_setfpscap},
 		{"getscript",&luatpt_getscript},
 		{"setwindowsize",&luatpt_setwindowsize},
+		{"watertest",&luatpt_togglewater},
 		{NULL,NULL}
 	};
 
@@ -268,6 +269,12 @@ int luatpt_togglepause(lua_State* l)
 	return 0;
 }
 
+int luatpt_togglewater(lua_State* l)
+{
+	water_equal_test=!water_equal_test;
+	return 0;
+}
+
 int luatpt_setconsole(lua_State* l)
 {
 	int consolestate;