diff --git a/lang/basic/src.old/graph.c b/lang/basic/src.old/graph.c
index dc68534b3..0a3a08235 100644
--- a/lang/basic/src.old/graph.c
+++ b/lang/basic/src.old/graph.c
@@ -7,6 +7,10 @@ static char rcs_id[] = "$Header$" ;
 
 List *forwardlabel=0;
 
+Linerecord	*firstline, 
+		*currline, 
+		*lastline;
+
 /* Line management is handled here */
 
 Linerecord *srchline(nr)
diff --git a/lang/basic/src.old/graph.h b/lang/basic/src.old/graph.h
index 43300bec5..acd56e136 100644
--- a/lang/basic/src.old/graph.h
+++ b/lang/basic/src.old/graph.h
@@ -28,7 +28,7 @@ typedef struct LINERECORD{
 	int	fixed;			/* fixation of block */
 } Linerecord;
 
-Linerecord	*firstline, 
+extern Linerecord	*firstline, 
 		*currline, 
 		*lastline;
 extern List	*forwardlabel;