diff --git a/tests/suites/helpers.function b/tests/suites/helpers.function
index 5938447..ff3ab99 100644
--- a/tests/suites/helpers.function
+++ b/tests/suites/helpers.function
@@ -140,6 +140,11 @@
 
     return 0;
 }
+
+static void close_output( FILE* stdout )
+{
+    fclose( stdout );
+}
 #endif /* __unix__ || __APPLE__ __MACH__ */
 
 static int unhexify( unsigned char *obuf, const char *ibuf )