diff --git a/mingw-w64-headers/Makefile.am b/mingw-w64-headers/Makefile.am
index a99e045..ce9edc8 100644
--- a/mingw-w64-headers/Makefile.am
+++ b/mingw-w64-headers/Makefile.am
@@ -95,6 +95,7 @@
   include/d3d11on12.idl \
   include/d3d11sdklayers.idl \
   include/d3d12.idl \
+  include/d3d12sdklayers.idl \
   include/d3d12shader.idl \
   include/d3dcommon.idl \
   include/dbgprop.idl \
diff --git a/mingw-w64-headers/wine-import.sh b/mingw-w64-headers/wine-import.sh
index 1618c2b..698dedb 100755
--- a/mingw-w64-headers/wine-import.sh
+++ b/mingw-w64-headers/wine-import.sh
@@ -142,6 +142,7 @@
 	d3d11_4 \
 	d3d11sdklayers \
 	d3d12 \
+	d3d12sdklayers \
 	d3d12shader \
 	d3dcommon \
 	dcommon \