diff --git a/tests/grib_optimize_scaling_sh.c b/tests/grib_optimize_scaling_sh.c
index b83d19c13..6cb1b3afd 100644
--- a/tests/grib_optimize_scaling_sh.c
+++ b/tests/grib_optimize_scaling_sh.c
@@ -15,7 +15,7 @@
  * philippe.marguinaud@meteo.fr, 2016/02
  */
 
-#include "grib_sh_values.h"
+#include "grib_sh_values.h" /* array 'values' defined here*/
 
 #define ILCHAM 992
 #define MTRONC 30
diff --git a/tests/grib_sh_ieee64.c b/tests/grib_sh_ieee64.c
index 9f2152a59..57b98c626 100644
--- a/tests/grib_sh_ieee64.c
+++ b/tests/grib_sh_ieee64.c
@@ -18,7 +18,7 @@
  * philippe.marguinaud@meteo.fr, 2016/02
  */
 
-#include "grib_sh_values.h"
+#include "grib_sh_values.h" /* array 'values' defined here*/
 
 #define ILCHAM 992
 #define MTRONC 30
diff --git a/tests/grib_sh_imag.c b/tests/grib_sh_imag.c
index 744be3c25..6091bb256 100644
--- a/tests/grib_sh_imag.c
+++ b/tests/grib_sh_imag.c
@@ -16,7 +16,7 @@
  * philippe.marguinaud@meteo.fr, 2016/02
  */
 
-#include "grib_sh_values.h"
+#include "grib_sh_values.h" /* array 'values' defined here*/
 
 #define ILCHAM 992
 #define MTRONC 30
diff --git a/tests/grib_sh_spectral_complex.c b/tests/grib_sh_spectral_complex.c
index b8b024e67..085d684d7 100644
--- a/tests/grib_sh_spectral_complex.c
+++ b/tests/grib_sh_spectral_complex.c
@@ -11,7 +11,7 @@
 #include "grib_api.h"
 #include <assert.h>
 
-#include "grib_sh_values.h"
+#include "grib_sh_values.h" /* array 'values' defined here*/
 
 #define ILCHAM 992
 #define MTRONC 30