diff --git a/tools/power/acpi/os_specific/service_layers/osunixxf.c b/tools/power/acpi/os_specific/service_layers/osunixxf.c
index 8d8003c919d4..8f5ded83a249 100644
--- a/tools/power/acpi/os_specific/service_layers/osunixxf.c
+++ b/tools/power/acpi/os_specific/service_layers/osunixxf.c
@@ -646,8 +646,12 @@ acpi_os_create_semaphore(u32 max_units,
 	}
 #ifdef __APPLE__
 	{
-		char *semaphore_name = tmpnam(NULL);
+		static int semaphore_count = 0;
+		char semaphore_name[32];
 
+		snprintf(semaphore_name, sizeof(semaphore_name), "acpi_sem_%d",
+			 semaphore_count++);
+		printf("%s\n", semaphore_name);
 		sem =
 		    sem_open(semaphore_name, O_EXCL | O_CREAT, 0755,
 			     initial_units);