diff --git a/src/cmd/services/m3coordinator/downsample/options.go b/src/cmd/services/m3coordinator/downsample/options.go
index f55e1c4acb..d6886cf959 100644
--- a/src/cmd/services/m3coordinator/downsample/options.go
+++ b/src/cmd/services/m3coordinator/downsample/options.go
@@ -263,9 +263,6 @@ type Configuration struct {
 	// EntryTTL determines how long an entry remains alive before it may be expired due to inactivity.
 	EntryTTL time.Duration `yaml:"entryTTL"`
 
-	// DisableAutoMappingRules disables auto mapping rules.
-	DisableAutoMappingRules bool `yaml:"disableAutoMappingRules"`
-
 	// AugmentM3Tags will augment the metric type to aggregated metrics
 	// to be used within the filter for rules. If enabled, for example,
 	// your filter can specify '__m3_type__:gauge' to filter by gauges.