diff --git a/app-emulation/libdsk/libdsk-1.5.4.recipe b/app-emulation/libdsk/libdsk-1.5.4.recipe
index 236de5d10..b41250437 100644
--- a/app-emulation/libdsk/libdsk-1.5.4.recipe
+++ b/app-emulation/libdsk/libdsk-1.5.4.recipe
@@ -15,17 +15,17 @@ COPYRIGHT="2010-2015 John Elliott"
 LICENSE="GNU GPL v2"
 HOMEPAGE="http://www.seasip.info/Unix/LibDsk/"
 REVISION="1"
+SOURCE_URI="http://www.seasip.info/Unix/LibDsk/libdsk-$portVersion.tar.gz"
+CHECKSUM_SHA256="e1c56f6395a011d508a5e548dcbcadce8ee8cb95740f986d6e8e3695ed59de82"
+
 ARCHITECTURES="x86 x86_gcc2"
 SECONDARY_ARCHITECTURES="x86 x86_gcc2"
 
-SOURCE_URI="http://www.seasip.info/Unix/LibDsk/libdsk-$portVersion.tar.gz"
-
 PROVIDES="
 	libdsk$secondaryArchSuffix = $portVersion
 	lib:libdsk$secondaryArchSuffix = 3.3.1 compat >= 3
 	"
 
-
 if [ -z "$secondaryArchSuffix" ]; then
 PROVIDES_tools="$PROVIDES
 	cmd:apriboot