diff --git a/src/fileio.c b/src/fileio.c
index 7d02a3b525d..2c88a64976d 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -76,9 +76,11 @@ extern int sys_nerr;
 #ifdef HPUX
 #include <netio.h>
 #ifndef HPUX8
+#ifndef HPUX9
 #include <errnet.h>
 #endif
 #endif
+#endif
 
 #ifndef O_WRONLY
 #define O_WRONLY 1