diff --git a/stats/mem.go b/stats/mem.go
index 413a78c..1963a2b 100644
--- a/stats/mem.go
+++ b/stats/mem.go
@@ -15,7 +15,7 @@ type BasicMemStats struct {
 	// General statistics.
 	Alloc      uint64 // bytes allocated and still in use
 	TotalAlloc uint64 // bytes allocated (even if freed)
-	Sys        uint64 // bytes obtained from system (sum of XxxSys below)
+	Sys        uint64 // bytes obtained from system (sum of XxxSys in runtime)
 	Lookups    uint64 // number of pointer lookups
 	Mallocs    uint64 // number of mallocs
 	Frees      uint64 // number of frees
diff --git a/stats/stats.go b/stats/stats.go
index 48941c6..cfe1614 100644
--- a/stats/stats.go
+++ b/stats/stats.go
@@ -84,7 +84,7 @@ type Stats struct {
 	RequestsErrored uint64 `json:"requests_errored"`
 
 	ResponseTime PercentileTimes  `json:"response_time"`
-	MemStats     *MemStatsWrapper `json:"mem_stats,omitempty"`
+	MemStats     *MemStatsWrapper `json:"mem,omitempty"`
 
 	events             chan int
 	ipv4PeerEvents     chan int