diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index 0d3d481..b5b4cb7 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -557,8 +557,11 @@
 				(*converted_name)[j++] = '.';
 			}
 
-			ACPI_MOVE_NAME(*converted_name, internal_name);
-			acpi_ut_repair_name(*converted_name);
+			/* Copy and validate the 4-char name segment */
+
+			ACPI_MOVE_NAME(&(*converted_name)[j],
+				       &internal_name[names_index]);
+			acpi_ut_repair_name(&(*converted_name)[j]);
 
 			j += ACPI_NAME_SIZE;
 			names_index += ACPI_NAME_SIZE;