diff --git a/inc/rs232c.h b/inc/rs232c.h
index 8a74562..3385b58 100755
--- a/inc/rs232c.h
+++ b/inc/rs232c.h
@@ -160,7 +160,4 @@ typedef struct {
 	DLword rs232c_length;
 	char   rs232c_data;
 } RS232C_ENCAPSULATION;
-
-extern DLword *Lisp_world;
-
 #endif