diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c
index 0e7b121a99ce..3bc0c67a9283 100644
--- a/drivers/acpi/tables/tbinstal.c
+++ b/drivers/acpi/tables/tbinstal.c
@@ -123,14 +123,14 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc,
 		}
 	}
 
-	/* The table must be either an SSDT or a PSDT */
+	/* The table must be either an SSDT or a PSDT or an OEMx */
 
 	if ((!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_PSDT))
 	    &&
-	    (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT)))
-	{
+	    (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT))
+	    && (strncmp(table_desc->pointer->signature, "OEM", 3))) {
 		ACPI_ERROR((AE_INFO,
-			    "Table has invalid signature [%4.4s], must be SSDT or PSDT",
+			    "Table has invalid signature [%4.4s], must be SSDT, PSDT or OEMx",
 			    table_desc->pointer->signature));
 		return_ACPI_STATUS(AE_BAD_SIGNATURE);
 	}