diff --git a/appl/popper/pop_dropcopy.c b/appl/popper/pop_dropcopy.c
index d1c78d9a3..0a4ba15b5 100644
--- a/appl/popper/pop_dropcopy.c
+++ b/appl/popper/pop_dropcopy.c
@@ -86,7 +86,7 @@ pop_dropcopy(POP *p, struct passwd *pwp)
     }
 
     /*  Lock the temporary maildrop */
-    if ( k_flock (dfd, (K_LOCK_EX | K_LOCK_NB)) == -1 ) 
+    if ( flock (dfd, (LOCK_EX | LOCK_NB)) == -1 ) 
     switch(errno) {
         case EWOULDBLOCK:
             return pop_msg(p,POP_FAILURE,
@@ -105,7 +105,7 @@ pop_dropcopy(POP *p, struct passwd *pwp)
     if ((mfd = open(p->drop_name,O_RDWR)) > 0) {
 
         /*  Lock the maildrop */
-        if (k_flock (mfd, K_LOCK_EX) == -1) {
+        if (flock (mfd, LOCK_EX) == -1) {
             close(mfd) ;
             return pop_msg(p,POP_FAILURE, "flock: '%s': %s", p->temp_drop,
 		strerror(errno));
diff --git a/appl/popper/pop_updt.c b/appl/popper/pop_updt.c
index 23f9b140b..526948867 100644
--- a/appl/popper/pop_updt.c
+++ b/appl/popper/pop_updt.c
@@ -62,7 +62,7 @@ pop_updt (POP *p)
     }
 
     /*  Lock the user's real mail drop */
-    if ( k_flock(mfd, K_LOCK_EX) == -1 ) {
+    if ( flock(mfd, LOCK_EX) == -1 ) {
         fclose(md) ;
         return pop_msg(p,POP_FAILURE, "flock: '%s': %s", p->temp_drop,
 		       strerror(errno));