diff --git a/metrics.go b/metrics.go
index f3d237f..90d3e92 100644
--- a/metrics.go
+++ b/metrics.go
@@ -190,7 +190,7 @@ func metricsHandler(response http.ResponseWriter, request *http.Request) {
 						fmt.Fprintf(response, "            ")
 					}
 
-					fmt.Fprintf(response, "[%d, %s, %s, %s, %d]\n", a, s[9], s[10], s[11], vbat2percent(s[10]))
+					fmt.Fprintf(response, "[%d, %s, %s, %s, %d]\n", a, s[9], s[10], s[11], vbat2percent(s[11]))
 
 				}