diff --git a/c/src/tests/support/ChangeLog b/c/src/tests/support/ChangeLog
index 1b7d469fc2..f781cdb104 100644
--- a/c/src/tests/support/ChangeLog
+++ b/c/src/tests/support/ChangeLog
@@ -1,3 +1,8 @@
+2004-02-03	Joel Sherrill <joel@OARcorp.com>
+
+	* include/buffer_test_io.h: Do not use iprintf() if in ANSI compiler
+	mode.
+
 2003-12-16	Joel Sherrill <joel@OARcorp.com>
 
 	PR 544/tests
diff --git a/c/src/tests/support/include/buffer_test_io.h b/c/src/tests/support/include/buffer_test_io.h
index 4fd016df6f..29c5946acc 100644
--- a/c/src/tests/support/include/buffer_test_io.h
+++ b/c/src/tests/support/include/buffer_test_io.h
@@ -22,11 +22,14 @@ extern "C" {
 
 #if !defined(TESTS_BUFFER_OUTPUT)
 
+/* do not use iprintf if strict ansi mode */
+#ifndef __STRICT_ANSI__
 #undef printf
 #define printf(...) \
   do { \
      iprintf( __VA_ARGS__); \ 
   } while (0)
+#endif
 
 #define rtems_test_exit(_s) \
   do { \