diff --git a/DMCompiler/DMStandard/Types/World.dm b/DMCompiler/DMStandard/Types/World.dm
index 609109c1d8..333d3eec9e 100644
--- a/DMCompiler/DMStandard/Types/World.dm
+++ b/DMCompiler/DMStandard/Types/World.dm
@@ -87,6 +87,9 @@
 		set opendream_unimplemented = TRUE
 	proc/Topic(T,Addr,Master,Keys)
 
+	proc/Tick()
+		set opendream_unimplemented = TRUE
+		
 	proc/SetScores()
 		set opendream_unimplemented = TRUE