diff --git a/acpica-tools.spec b/acpica-tools.spec
index 41a584e..dcb6375 100644
--- a/acpica-tools.spec
+++ b/acpica-tools.spec
@@ -1,6 +1,6 @@
 Name:           acpica-tools
 Version:        20181213
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        ACPICA tools for the development and debug of ACPI tables
 
 Group:          Development/Languages
@@ -43,6 +43,7 @@ Patch14:        cve-2017-13695.patch
 Patch15:        str-trunc-warn.patch
 Patch16:	ptr-cast.patch
 Patch17:	aslcodegen.patch
+Patch18:	facp.patch
 
 BuildRequires:  bison patchutils flex gcc
 
@@ -110,6 +111,7 @@ gzip -dc %{SOURCE1} | tar -x --strip-components=1 -f -
 %patch15 -p1 -b .str-trunc-warn
 %patch16 -p1 -b .ptr-cast
 %patch17 -p1 -b .aslcodegen
+%patch18 -p1 -b .facp
 
 cp -p %{SOURCE2} README.Fedora
 cp -p %{SOURCE3} iasl.1
@@ -238,6 +240,9 @@ fi
 
 
 %changelog
+* Wed Dec 19 2018 Al Stone <ahs3@redhat.com> - 20181213-2
+- Add a patch to allow zero DSDT addresses in the FADT when compiling
+
 * Thu Dec 13 2018 Al Stone <ahs3@redhat.com> - 20181213-1
 - Update to 20181213 source tree, including patch refeshes.
 - Refresh patches; folded be-tpm2 into the larger big-endian patch after
diff --git a/facp.patch b/facp.patch
new file mode 100644
index 0000000..8b6bef7
--- /dev/null
+++ b/facp.patch
@@ -0,0 +1,31 @@
+From 7670c56ebe004e698551635f9c5d48a1794066dd Mon Sep 17 00:00:00 2001
+From: Al Stone <ahs3@ahs3.net>
+Date: Wed, 19 Dec 2018 16:52:41 -0700
+Subject: [PATCH] Correct DSDT Address field in FACP tables
+
+The FADT allows either the DSDT Address or XDSDT Address field to be
+zero.  However, the table definition used by the table compiler still
+requires the DSDT Address to be non-zero, which is not correct.  So,
+remove the DT_NON_ZERO flag from the field.
+
+Signed-off-by: Al Stone <ahs3@redhat.com>
+---
+ source/common/dmtbinfo.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/source/common/dmtbinfo.c b/source/common/dmtbinfo.c
+index 2e1c54f84..07d3ce099 100644
+--- a/source/common/dmtbinfo.c
++++ b/source/common/dmtbinfo.c
+@@ -292,7 +292,7 @@ ACPI_DMTABLE_INFO           AcpiDmTableInfoFacs[] =
+ ACPI_DMTABLE_INFO           AcpiDmTableInfoFadt1[] =
+ {
+     {ACPI_DMT_UINT32,   ACPI_FADT_OFFSET (Facs),                    "FACS Address", 0},
+-    {ACPI_DMT_UINT32,   ACPI_FADT_OFFSET (Dsdt),                    "DSDT Address", DT_NON_ZERO},
++    {ACPI_DMT_UINT32,   ACPI_FADT_OFFSET (Dsdt),                    "DSDT Address", 0},
+     {ACPI_DMT_UINT8,    ACPI_FADT_OFFSET (Model),                   "Model", 0},
+     {ACPI_DMT_FADTPM,   ACPI_FADT_OFFSET (PreferredProfile),        "PM Profile", 0},
+     {ACPI_DMT_UINT16,   ACPI_FADT_OFFSET (SciInterrupt),            "SCI Interrupt", 0},
+-- 
+2.20.1
+