diff --git a/lang/pc/libpc/opn.c b/lang/pc/libpc/opn.c
index e28e3edb9..83f9d91ec 100644
--- a/lang/pc/libpc/opn.c
+++ b/lang/pc/libpc/opn.c
@@ -87,10 +87,10 @@ static int initfl(descr,sz,f) int descr; int sz; struct file *f; {
 		f->fname = _pargv[i];
 		_cls(f);
 		if ((descr & WRBIT) == 0) {
-			if ((f->ufd = _open(f->fname,0)) < 0)
+			if ((f->ufd = open(f->fname,0)) < 0)
 				_trp(ERESET);
 		} else {
-			if ((f->ufd = _creat(f->fname,0644)) < 0)
+			if ((f->ufd = creat(f->fname,0644)) < 0)
 				_trp(EREWR);
 		}
 	}
diff --git a/lang/pc/libpc/pcreat.c b/lang/pc/libpc/pcreat.c
index b9c565f68..103362491 100644
--- a/lang/pc/libpc/pcreat.c
+++ b/lang/pc/libpc/pcreat.c
@@ -18,12 +18,12 @@
 
 /* Author: J.W. Stevenson */
 
+#include    <unistd.h>
 #include	<pc_file.h>
 #include	<pc_err.h>
 
 extern		_cls();
 extern		_trp();
-extern int	_creat();
 
 /* procedure pcreat(var f:text; s:string); */
 
@@ -36,6 +36,6 @@ pcreat(f,s) struct file *f; char *s; {
 	f->size = 1;
 	f->count = PC_BUFLEN;
 	f->buflen = PC_BUFLEN;
-	if ((f->ufd = _creat(s,0644)) < 0)
+	if ((f->ufd = creat(s,0644)) < 0)
 		_trp(EREWR);
 }