diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c
--- a/sys/dev/acpica/acpi.c
+++ b/sys/dev/acpica/acpi.c
@@ -1116,6 +1116,7 @@
 
     if (acpi_get_device(dinfo->ad_handle) == child)
 	AcpiDetachData(dinfo->ad_handle, acpi_fake_objhandler);
+    free(dinfo, M_ACPIDEV);
 }
 
 /*