diff --git a/pppd/pathnames.h b/pppd/pathnames.h
index de2fb688..37ec82e6 100644
--- a/pppd/pathnames.h
+++ b/pppd/pathnames.h
@@ -120,7 +120,7 @@
 #define PPP_PATH_PPPDB          PPP_PATH_VARRUN  "/pppd2.tdb"
 
 #ifdef __linux__
-#define PPP_PATH_LOCKDIR        PPP_PATH_VARRUN  "/lock"
+#define PPP_PATH_LOCKDIR        _PATH_VARRUN  "/lock"
 #else
 #ifdef SVR4
 #define PPP_PATH_LOCKDIR        LOCALSTATEDIR "/spool/locks"