diff --git a/spec/rcov.opts b/spec/rcov.opts
index 126e4ea..37b8594 100644
--- a/spec/rcov.opts
+++ b/spec/rcov.opts
@@ -1,4 +1,4 @@
---exclude "spec"
+--exclude-only "spec\/,^\/"
 --sort coverage
 --callsites
 --xrefs