diff --git a/libio/tests/ChangeLog b/libio/tests/ChangeLog
index cd9426605571..dc9a375a1626 100644
--- a/libio/tests/ChangeLog
+++ b/libio/tests/ChangeLog
@@ -1,3 +1,9 @@
+1997-10-31  Brendan Kehoe  <brendan@lisa.cygnus.com>
+
+	* tFile.cc (t4): Cast TMPFILE to char* in the call to unlink, to
+	solve warning problems with vxworks headers that leave const off
+	their declarations.
+
 Tue May 20 17:57:31 1997  Jeffrey A Law  (law@cygnus.com)
 
 	* tfformat.c (main): Only run half the testcases if SLOW_SIMULATOR
diff --git a/libio/tests/tFile.cc b/libio/tests/tFile.cc
index f5b8a6f7760c..42090ff83a30 100644
--- a/libio/tests/tFile.cc
+++ b/libio/tests/tFile.cc
@@ -225,7 +225,7 @@ void t4()
   tf.remove();
 #else
   tf.close();
-  unlink(tempfile);
+  unlink((char*)tempfile);
 #endif
   assert(!tf.is_open());
 }