diff --git a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
index 0a67b6f5381c..b7515e815f76 100644
--- a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
+++ b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
@@ -799,7 +799,11 @@ void err_on_hypervisor(void)
 		err(1, "Failed to find 'flags' in /proc/cpuinfo");
 	}
 	rewind(cpuinfo);
-	fseek(cpuinfo, flags - buffer, SEEK_SET);
+	if (fseek(cpuinfo, flags - buffer, SEEK_SET) != 0) {
+		fclose(cpuinfo);
+		free(buffer);
+		err(1, "Failed to seek in /proc/cpuinfo");
+	}
 	if (!fgets(buffer, 4096, cpuinfo)) {
 		fclose(cpuinfo);
 		free(buffer);