diff --git a/examples/C/grib_pthreads.c b/examples/C/grib_pthreads.c
index 443315d4a..15cdcb669 100644
--- a/examples/C/grib_pthreads.c
+++ b/examples/C/grib_pthreads.c
@@ -35,7 +35,7 @@ static void* process_grib(void* threadID)
     CODES_CHECK(codes_set_string(h,"indicatorOfUnitOfTimeRange", "s", &str_len),0);
     CODES_CHECK(codes_set_string(h,"stepUnits", "s", &str_len),0);
     CODES_CHECK(codes_set_long(h, "endStep", 86400), 0);
-    CODES_CHECK(codes_set_long(h,"centre", 80),0);
+    //CODES_CHECK(codes_set_long(h,"centre", 80),0);
 
     CODES_CHECK(codes_get_long(h,"endStep", &step),0);
     CODES_CHECK(codes_get_string(h, "indicatorOfUnitOfTimeRange", mystring, &str_len),0);
@@ -64,6 +64,7 @@ int main(int argc, char** argv)
         printf("Creating thread %ld\n", i);
         error = pthread_create(&threads[i], NULL, process_grib, (void *)i);
         if (error) {
+            assert(0);
             return 1;
         }
     }
diff --git a/tests/grib_ecc-604.sh b/tests/grib_ecc-604.sh
index 964983658..52c7be28d 100755
--- a/tests/grib_ecc-604.sh
+++ b/tests/grib_ecc-604.sh
@@ -41,6 +41,11 @@ time ${test_dir}/grib_ecc-604 par $input $NUM_THREADS $NUM_ITER
 #    break
 #  fi
 #done
+echo "Checking every output file is identical..."
+set +x
+res=`cksum $OUTPUT/output_file_* | awk '{print $1}' | sort -u`
+set -x
+[ "$res" = "2572910830" ]
 
 # Clean up
 cd $test_dir