diff --git a/lang/compile.py b/lang/compile.py
index 19a770d..d45a4c9 100755
--- a/lang/compile.py
+++ b/lang/compile.py
@@ -190,7 +190,7 @@
 		command = parse_set(line)
 	elif instr == "Return":
 		command = parse_return(line)
-	else:
+	if not command:
 		print("not a command? line: %s" % (' '.join(line)))
 		return None
 	return ASTCommand(command)