diff --git a/metrics/debug.go b/metrics/debug.go
index 01ff4cfa66..eca6f0306f 100644
--- a/metrics/debug.go
+++ b/metrics/debug.go
@@ -19,7 +19,7 @@ var (
 	gcStats debug.GCStats
 )
 
-// CaptureDebugGCStats capture new values for the Go garbage collector statistics
+// CaptureDebugGCStats captures new values for the Go garbage collector statistics
 // exported in debug.GCStats. This is designed to be called as a goroutine.
 func CaptureDebugGCStats(r Registry, d time.Duration) {
 	for range time.Tick(d) {
@@ -27,7 +27,7 @@ func CaptureDebugGCStats(r Registry, d time.Duration) {
 	}
 }
 
-// CaptureDebugGCStatsOnce capture new values for the Go garbage collector 
+// CaptureDebugGCStatsOnce captures new values for the Go garbage collector 
 // statistics exported in debug.GCStats. This is designed to be called in 
 // a background goroutine. Giving a registry which has not been given to 
 // RegisterDebugGCStats will panic.
@@ -50,7 +50,7 @@ func CaptureDebugGCStatsOnce(r Registry) {
 	debugMetrics.GCStats.PauseTotal.Update(int64(gcStats.PauseTotal))
 }
 
-// RegisterDebugGCStats register metrics for the Go garbage collector statistics
+// RegisterDebugGCStats registers metrics for the Go garbage collector statistics
 // exported in debug.GCStats. The metrics are named by their fully-qualified Go
 // symbols, i.e. debug.GCStats.PauseTotal.
 func RegisterDebugGCStats(r Registry) {