diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 7d7d1dc263f..da882b22dc6 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -1510,7 +1510,7 @@ static struct config_bool ConfigureNamesBool[] =
 
 	{
 		{"data_checksums", PGC_INTERNAL, PRESET_OPTIONS,
-			gettext_noop("Shows whether data checksums are turned on for this cluster"),
+			gettext_noop("Shows whether data checksums are turned on for this cluster."),
 			NULL,
 			GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
 		},