diff --git a/nc_test4/tst_udf.c b/nc_test4/tst_udf.c
index d734694ff..d6af27313 100644
--- a/nc_test4/tst_udf.c
+++ b/nc_test4/tst_udf.c
@@ -13,9 +13,16 @@
 #include "netcdf.h"
 #include "nc4dispatch.h"
 
-
 #define FILE_NAME "tst_udf.nc"
 
+#ifndef LOGGING
+int
+NC4_show_metadata(int ncid)
+{
+   return 0;
+}
+#endif
+
 int
 tst_open(const char *path, int mode, int basepe, size_t *chunksizehintp,
              int use_parallel, void *parameters, NC_Dispatch *dispatch,