diff --git a/arogue5/mdport.c b/arogue5/mdport.c
index d479444..1235589 100644
--- a/arogue5/mdport.c
+++ b/arogue5/mdport.c
@@ -209,6 +209,15 @@ md_creat(char *file, int mode)
     return(fd);
 }
 
+FILE *
+md_fdopen(int fd, char *mode)
+{
+#ifdef _WIN32
+    return( _fdopen(fd, mode) );
+#else
+    return( fdopen(fd, mode) );
+#endif
+}
 
 int
 md_normaluser()
diff --git a/arogue5/rip.c b/arogue5/rip.c
index 7a7e601..5b3dc52 100644
--- a/arogue5/rip.c
+++ b/arogue5/rip.c
@@ -209,7 +209,7 @@ short monst;
        printf("\nCannot open score_file.\n");
        return;
     }
-    outf = (FILE *) fdopen(fd, "w");
+    outf = (FILE *) md_fdopen(fd, "w");
 
     /* Get this system's name */
     thissys = md_gethostname();
diff --git a/arogue5/rogue.h b/arogue5/rogue.h
index e3ebf71..9b4036e 100644
--- a/arogue5/rogue.h
+++ b/arogue5/rogue.h
@@ -983,6 +983,7 @@ extern char *md_getpass();
 extern char *md_crypt();
 extern char *md_getroguedir();
 extern void md_init();
+extern FILE * md_fdopen(int fd, char *mode);
 
 /*
  * Now all the global variables