diff --git a/nc_test/tst_inmemory.c b/nc_test/tst_inmemory.c
index e8c508241..9f979be8e 100644
--- a/nc_test/tst_inmemory.c
+++ b/nc_test/tst_inmemory.c
@@ -20,9 +20,8 @@ redistribution conditions.
 #include "nc_tests.h"
 #include "err_macros.h"
 
-#include <hdf5.h>
-
 #ifdef USE_NETCDF4
+#include <hdf5.h>
 extern int H5Eprint1(FILE * stream);
 #endif