diff --git a/src/include/ngspice/fteext.h b/src/include/ngspice/fteext.h
index 390ff04dc..83f5489d7 100644
--- a/src/include/ngspice/fteext.h
+++ b/src/include/ngspice/fteext.h
@@ -279,9 +279,6 @@ extern bool check_autostop(char *what);
 
 /* randnumb.c */
 extern void TausSeed(void);
-/* rnorrexp.c */
-extern void zigset(unsigned long jsrseed);
-
 /* resource.c */
 
 extern void ft_ckspace(void);