diff --git a/debian/rules b/debian/rules
index dc94819..34f8786 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,4 +1,6 @@
 #!/usr/bin/make -f
+
+# output every command that modifies files on the build system.
 #export DH_VERBOSE = 1
 
 export DH_GOPKG := github.com/lanrat/certgraph