diff --git a/.coveragerc b/.coveragerc
index 11f2ec8387..af3ce85787 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -3,6 +3,7 @@ branch = True
 parallel = True
 include=$TOP/synapse/*
 data_file = $TOP/.coverage
+relative_files = True
 
 [report]
 precision = 2