diff --git a/lib/libspl/include/Makefile.am b/lib/libspl/include/Makefile.am
index 85f8d466de..b47fad2395 100644
--- a/lib/libspl/include/Makefile.am
+++ b/lib/libspl/include/Makefile.am
@@ -3,5 +3,6 @@ nobase_pkginclude_HEADERS += ia32/sys/*.h
 nobase_pkginclude_HEADERS += rpc/*.h
 nobase_pkginclude_HEADERS += sys/*.h
 nobase_pkginclude_HEADERS += sys/fm/*.h
+nobase_pkginclude_HEADERS += sys/dktp/*.h
 nobase_pkginclude_HEADERS += sys/sysevent/*.h
 nobase_pkginclude_HEADERS += tsol/*.h