diff --git a/collectors/cpustatMetric.go b/collectors/cpustatMetric.go
index cafb9e3..3e5bc03 100644
--- a/collectors/cpustatMetric.go
+++ b/collectors/cpustatMetric.go
@@ -13,7 +13,7 @@ import (
 const CPUSTATFILE = `/proc/stat`
 
 type CpustatCollectorConfig struct {
-	ExcludeMetrics []string `json:"exclude_metrics, omitempty"`
+	ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
 }
 
 type CpustatCollector struct {
diff --git a/collectors/diskstatMetric.go b/collectors/diskstatMetric.go
index d932fea..471099d 100644
--- a/collectors/diskstatMetric.go
+++ b/collectors/diskstatMetric.go
@@ -15,7 +15,7 @@ const DISKSTATFILE = `/proc/diskstats`
 const DISKSTAT_SYSFSPATH = `/sys/block`
 
 type DiskstatCollectorConfig struct {
-	ExcludeMetrics []string `json:"exclude_metrics, omitempty"`
+	ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
 }
 
 type DiskstatCollector struct {
diff --git a/collectors/infinibandMetric.go b/collectors/infinibandMetric.go
index 70eaf04..ecb9524 100644
--- a/collectors/infinibandMetric.go
+++ b/collectors/infinibandMetric.go
@@ -22,7 +22,7 @@ const LIDFILE = `/sys/class/infiniband/mlx4_0/ports/1/lid`
 const PERFQUERY = `/usr/sbin/perfquery`
 
 type InfinibandCollectorConfig struct {
-	ExcludeDevices []string `json:"exclude_devices, omitempty"`
+	ExcludeDevices []string `json:"exclude_devices,omitempty"`
 	PerfQueryPath  string   `json:"perfquery_path"`
 }
 
diff --git a/collectors/loadavgMetric.go b/collectors/loadavgMetric.go
index bb820b0..683514e 100644
--- a/collectors/loadavgMetric.go
+++ b/collectors/loadavgMetric.go
@@ -12,7 +12,7 @@ import (
 const LOADAVGFILE = `/proc/loadavg`
 
 type LoadavgCollectorConfig struct {
-	ExcludeMetrics []string `json:"exclude_metrics, omitempty"`
+	ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
 }
 
 type LoadavgCollector struct {
diff --git a/collectors/nvidiaMetric.go b/collectors/nvidiaMetric.go
index 1531f14..279ff45 100644
--- a/collectors/nvidiaMetric.go
+++ b/collectors/nvidiaMetric.go
@@ -11,8 +11,8 @@ import (
 )
 
 type NvidiaCollectorConfig struct {
-	ExcludeMetrics []string `json:"exclude_metrics, omitempty"`
-	ExcludeDevices []string `json:"exclude_devices, omitempty"`
+	ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
+	ExcludeDevices []string `json:"exclude_devices,omitempty"`
 }
 
 type NvidiaCollector struct {
diff --git a/metric-collector.go b/metric-collector.go
index 68a5bb3..75ebcd5 100644
--- a/metric-collector.go
+++ b/metric-collector.go
@@ -54,11 +54,11 @@ import (
 type CentralConfigFile struct {
 	Interval            int    `json:"interval"`
 	Duration            int    `json:"duration"`
-	Pidfile             string `json:"pidfile", omitempty`
+	Pidfile             string `json:"pidfile,omitempty"`
 	CollectorConfigFile string `json:"collectors"`
 	RouterConfigFile    string `json:"router"`
 	SinkConfigFile      string `json:"sinks"`
-	ReceiverConfigFile  string `json:"receivers", omitempty`
+	ReceiverConfigFile  string `json:"receivers,omitempty"`
 }
 
 func LoadCentralConfiguration(file string, config *CentralConfigFile) error {
diff --git a/receivers/metricReceiver.go b/receivers/metricReceiver.go
index 05b8b65..2c74409 100644
--- a/receivers/metricReceiver.go
+++ b/receivers/metricReceiver.go
@@ -10,7 +10,7 @@ type ReceiverConfig struct {
 	Addr         string `json:"address"`
 	Port         string `json:"port"`
 	Database     string `json:"database"`
-	Organization string `json:"organization", omitempty`
+	Organization string `json:"organization,omitempty"`
 	Type         string `json:"type"`
 }
 
diff --git a/sinks/metricSink.go b/sinks/metricSink.go
index 37ffa8f..25f66bb 100644
--- a/sinks/metricSink.go
+++ b/sinks/metricSink.go
@@ -7,14 +7,14 @@ import (
 
 type sinkConfig struct {
 	Type         string `json:"type"`
-	Host         string `json:"host", omitempty`
-	Port         string `json:"port", omitempty`
-	Database     string `json:"database, omitempty"`
-	User         string `json:"user, omitempty"`
-	Password     string `json:"password", omitempty`
-	Organization string `json:"organization", omitempty`
-	SSL          bool   `json:"ssl", omitempty`
-	MetaAsTags   bool   `json:"meta_as_tags", omitempty`
+	Host         string `json:"host,omitempty"`
+	Port         string `json:"port,omitempty"`
+	Database     string `json:"database,omitempty"`
+	User         string `json:"user,omitempty"`
+	Password     string `json:"password,omitempty"`
+	Organization string `json:"organization,omitempty"`
+	SSL          bool   `json:"ssl,omitempty"`
+	MetaAsTags   bool   `json:"meta_as_tags,omitempty"`
 }
 
 type sink struct {