Index: src/eval.c
--- src/eval.c.orig
+++ src/eval.c
@@ -1470,7 +1470,7 @@ xnext:		++sp;
 /*	setwlist:	Set an alternative list of character to be
 			considered "in a word */
 
-PASCAL NEAR setwlist(wclist)
+void PASCAL NEAR setwlist(wclist)
 
 char *wclist;	/* list of characters to consider "in a word" */