diff --git a/ppp/dahdi.c b/ppp/dahdi.c
index 6991ccf..4e62355 100644
--- a/ppp/dahdi.c
+++ b/ppp/dahdi.c
@@ -232,7 +232,7 @@ int setdevname_dahdi(const char *cp)
 	}
     }
 
-    dahdi__copy_string(devnam, cp, sizeof(devnam));
+    dahdi_copy_string(devnam, cp, sizeof(devnam));
 
     info("Using DAHDI device '%s'\n", devnam);