diff --git a/build-aux/build-ports.sh b/build-aux/build-ports.sh
index eb6f16d8..da9ba4c1 100755
--- a/build-aux/build-ports.sh
+++ b/build-aux/build-ports.sh
@@ -143,7 +143,7 @@ strip_tix() {
   $HOST-strip -d "$DIR/data/libexec"* 2>/dev/null || true
   $HOST-strip -d "$DIR/data/libexec/git-core/"* 2>/dev/null || true
   $HOST-strip -d "$DIR/data/sbin/"* 2>/dev/null || true
-  (cd "$DIR" && tar -cJf port.tar.tix.xz tix data)
+  (cd "$DIR" && tar --numeric-owner --owner=0 --group=0 -cJf port.tar.tix.xz tix data)
   cp "$DIR/port.tar.tix.xz" "$1"
   rm -rf "$DIR"
 }
diff --git a/tix/tix-build.c b/tix/tix-build.c
index 7750a306..15fe295a 100644
--- a/tix/tix-build.c
+++ b/tix/tix-build.c
@@ -738,6 +738,9 @@ void BuildPackage(metainfo_t* minfo)
 				"--remove-files",
 				"--create",
 				"--xz",
+				"--numeric-owner",
+				"--owner=0",
+				"--group=0",
 				"--file", package_tix,
 				"tix",
 				"data",
diff --git a/tix/tix-install.c b/tix/tix-install.c
index 4178fad0..e5fe91ff 100644
--- a/tix/tix-install.c
+++ b/tix/tix-install.c
@@ -364,6 +364,8 @@ void InstallPackage(const char* tix_path)
 			"--extract",
 			"--file", tix_path,
 			"--keep-directory-symlink",
+			"--same-permissions",
+			"--no-same-owner",
 			data_and_prefix,
 			NULL
 		};