diff --git a/sysfs/meminfo_numa.go b/sysfs/meminfo_numa.go
index 2f0ed98e..14d0ba87 100644
--- a/sysfs/meminfo_numa.go
+++ b/sysfs/meminfo_numa.go
@@ -28,7 +28,7 @@ import (
 	"github.com/prometheus/procfs/internal/util"
 )
 
-// Meminfo represents memory statistics for NUMA node
+// Meminfo represents memory statistics for NUMA node.
 type Meminfo struct {
 	MemTotal        uint64
 	MemFree         uint64