use dh_prep instead of dh_clean -k

diff --git a/debian/rules b/debian/rules
index 5674e59..e9faea2 100755 (executable)
--- a/debian/rules
+++ b/debian/rules
@@ -54,7 +54,7 @@ clean:
 install: build
        dh_testdir
        dh_testroot
-       dh_clean -k
+       dh_prep
        dh_installdirs
 
        # Add here commands to install the package into debian/ckermit.