diff --git a/src/run-tests.pl b/src/run-tests.pl
index 5a97bf8..b0d7311 100755
--- a/src/run-tests.pl
+++ b/src/run-tests.pl
@@ -730,7 +730,7 @@ sub test($$$@)
 				print "Expected result:\n";
 				printchan($tx);
 				print "Actual result:\n";
-				showchan("slave/.mbsyncstate");
+				showchan("slave/.mbsyncstate.new");
 			}
 			print "Debug output:\n";
 			print @nret;