diff --git a/router.go b/router.go
index 9cd64e5..41861d3 100644
--- a/router.go
+++ b/router.go
@@ -482,5 +482,5 @@ func buildChain(f http.HandlerFunc, m ...Middleware) http.HandlerFunc {
 		return f
 	}
 	// otherwise nest the handlerfuncs
-	return m[0](buildChain(f, m[1:cap(m)]...))
+	return m[0](buildChain(f, m[1:len(m)]...))
 }