diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c
index a5a8badb83d4..71d6f88cc1f7 100644
--- a/tools/testing/selftests/resctrl/resctrl_val.c
+++ b/tools/testing/selftests/resctrl/resctrl_val.c
@@ -32,7 +32,6 @@ struct imc_counter_config {
 	__u64 event;
 	__u64 umask;
 	struct perf_event_attr pe;
-	struct membw_read_format return_value;
 	int fd;
 };
 
@@ -312,23 +311,23 @@ static int get_read_mem_bw_imc(float *bw_imc)
 	 * Take overflow into consideration before calculating total bandwidth.
 	 */
 	for (imc = 0; imc < imcs; imc++) {
+		struct membw_read_format measurement;
 		struct imc_counter_config *r =
 			&imc_counters_config[imc];
 
-		if (read(r->fd, &r->return_value,
-			 sizeof(struct membw_read_format)) == -1) {
+		if (read(r->fd, &measurement, sizeof(measurement)) == -1) {
 			ksft_perror("Couldn't get read bandwidth through iMC");
 			return -1;
 		}
 
-		__u64 r_time_enabled = r->return_value.time_enabled;
-		__u64 r_time_running = r->return_value.time_running;
+		__u64 r_time_enabled = measurement.time_enabled;
+		__u64 r_time_running = measurement.time_running;
 
 		if (r_time_enabled != r_time_running)
 			of_mul_read = (float)r_time_enabled /
 					(float)r_time_running;
 
-		reads += r->return_value.value * of_mul_read * SCALE;
+		reads += measurement.value * of_mul_read * SCALE;
 	}
 
 	*bw_imc = reads;