2 files changed, 2 insertions, 1 deletions
diff --git a/debian/changelog b/debian/changelog
index 791066d..491e80f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -4,6 +4,7 @@ dgit (6.5~) unstable; urgency=medium
   * test suite: editing a test script overrides DGIT_TESTS_PROGRESSIVE.
   * dgit: Rename --dgit-view-save to --save-dgit-view, leaving an alias.
   * dgit: Provide print-unapplied-treeish subcommand.
+  * dgit: Improve error message for unknown suite, to suggest -d.
 
  --
 
diff --git a/dgit b/dgit
index ddc2d6c..29d29d1 100755
--- a/dgit
+++ b/dgit
@@ -1078,7 +1078,7 @@ sub canonicalise_suite_ftpmasterapi {
 	} qw(codename name);
 	push @matched, $entry;
     }
-    fail "unknown suite $isuite" unless @matched;
+    fail "unknown suite $isuite, maybe -d would help" unless @matched;
     my $cn;
     eval {
 	@matched==1 or die "multiple matches for suite $isuite\n";