diff --git a/doc/09-object-types.md b/doc/09-object-types.md
index 2976356f0..95e9dccbb 100644
--- a/doc/09-object-types.md
+++ b/doc/09-object-types.md
@@ -247,8 +247,6 @@ This configuration object is available as [checker feature](11-cli-commands.md#c
 Example:
 
 ```
-library "checker"
-
 object CheckerComponent "checker" {
   concurrent_checks = 512
 }
@@ -268,8 +266,6 @@ to help existing Icinga 1.x users and might be useful for migration scenarios.
 Example:
 
 ```
-library "compat"
-
 object CheckResultReader "reader" {
   spool_dir = "/data/check-results"
 }
@@ -318,8 +314,6 @@ This configuration object is available as [compatlog feature](14-features.md#com
 Example:
 
 ```
-library "compat"
-
 object CompatLogger "compatlog" {
   log_dir = "/var/log/icinga2/compat"
   rotation_method = "DAILY"
@@ -486,8 +480,6 @@ This configuration object is available as [elasticsearch feature](14-features.md
 Example:
 
 ```
-library "perfdata"
-
 object ElasticsearchWriter "elasticsearch" {
   host = "127.0.0.1"
   port = 9200
@@ -603,8 +595,6 @@ This configuration object is available as [command feature](14-features.md#exter
 Example:
 
 ```
-library "compat"
-
 object ExternalCommandListener "command" {
     command_path = "/var/run/icinga2/cmd/icinga2.cmd"
 }
@@ -648,8 +638,6 @@ This configuration object is available as [gelf feature](14-features.md#gelfwrit
 Example:
 
 ```
-library "perfdata"
-
 object GelfWriter "gelf" {
   host = "127.0.0.1"
   port = 12201
@@ -675,8 +663,6 @@ This configuration object is available as [graphite feature](14-features.md#grap
 Example:
 
 ```
-library "perfdata"
-
 object GraphiteWriter "graphite" {
   host = "127.0.0.1"
   port = 2003
@@ -845,8 +831,6 @@ This configuration object is available as [ido-mysql feature](14-features.md#db-
 Example:
 
 ```
-library "db_ido_mysql"
-
 object IdoMysqlConnection "mysql-ido" {
   host = "127.0.0.1"
   port = 3306
@@ -938,8 +922,6 @@ This configuration object is available as [ido-pgsql feature](14-features.md#db-
 Example:
 
 ```
-library "db_ido_pgsql"
-
 object IdoPgsqlConnection "pgsql-ido" {
   host = "127.0.0.1"
   port = 5432
@@ -1024,8 +1006,6 @@ This configuration object is available as [influxdb feature](14-features.md#infl
 Example:
 
 ```
-library "perfdata"
-
 object InfluxdbWriter "influxdb" {
   host = "127.0.0.1"
   port = 8086
@@ -1086,8 +1066,6 @@ This configuration object is available as [livestatus feature](14-features.md#se
 Examples:
 
 ```
-library "livestatus"
-
 object LivestatusListener "livestatus-tcp" {
   socket_type = "tcp"
   bind_host = "127.0.0.1"
@@ -1300,8 +1278,6 @@ This configuration object is available as [notification feature](11-cli-commands
 Example:
 
 ```
-library "notification"
-
 object NotificationComponent "notification" { }
 ```
 
@@ -1319,8 +1295,6 @@ This configuration object is available as [opentsdb feature](14-features.md#open
 Example:
 
 ```
-library "perfdata"
-
 object OpenTsdbWriter "opentsdb" {
   host = "127.0.0.1"
   port = 4242
@@ -1344,8 +1318,6 @@ This configuration object is available as [perfdata feature](14-features.md#writ
 Example:
 
 ```
-library "perfdata"
-
 object PerfdataWriter "perfdata" {
   host_perfdata_path = "/var/spool/icinga2/perfdata/host-perfdata"
 
@@ -1556,8 +1528,6 @@ This configuration object is available as [statusdata feature](14-features.md#st
 Example:
 
 ```
-library "compat"
-
 object StatusDataWriter "status" {
     status_path = "/var/cache/icinga2/status.dat"
     objects_path = "/var/cache/icinga2/objects.cache"
diff --git a/doc/17-language-reference.md b/doc/17-language-reference.md
index e18a0a7c7..cf3934176 100644
--- a/doc/17-language-reference.md
+++ b/doc/17-language-reference.md
@@ -610,13 +610,9 @@ When no pattern is specified the default pattern "*.conf" is used.
 
 ## Library directive <a id="library"></a>
 
-The `library` directive can be used to manually load additional
-libraries. Libraries can be used to provide additional object types and
-functions.
-
-Example:
-
-    library "snmphelper"
+The `library` directive was used to manually load additional
+libraries. Starting with version 2.9 it is no longer necessary to explicitly load
+libraries and this directive has no effect.
 
 ## Functions <a id="functions"></a>
 
diff --git a/etc/icinga2/features-available/checker.conf b/etc/icinga2/features-available/checker.conf
index 1139e626e..6f003b8f3 100644
--- a/etc/icinga2/features-available/checker.conf
+++ b/etc/icinga2/features-available/checker.conf
@@ -2,6 +2,4 @@
  * The checker component takes care of executing service checks.
  */
 
-library "checker"
-
 object CheckerComponent "checker" { }
diff --git a/etc/icinga2/features-available/command.conf b/etc/icinga2/features-available/command.conf
index 35830560e..ffdd143a9 100644
--- a/etc/icinga2/features-available/command.conf
+++ b/etc/icinga2/features-available/command.conf
@@ -3,7 +3,5 @@
  * commands pipe.
  */
 
-library "compat"
-
 object ExternalCommandListener "command" { }
 
diff --git a/etc/icinga2/features-available/compatlog.conf b/etc/icinga2/features-available/compatlog.conf
index 58c5df716..6f5cf5f52 100644
--- a/etc/icinga2/features-available/compatlog.conf
+++ b/etc/icinga2/features-available/compatlog.conf
@@ -3,7 +3,5 @@
  * that is compatible with Icinga 1.x.
  */
 
-library "compat"
-
 object CompatLogger "compatlog" { }
 
diff --git a/etc/icinga2/features-available/elasticsearch.conf b/etc/icinga2/features-available/elasticsearch.conf
index 86a05a248..8014913a7 100644
--- a/etc/icinga2/features-available/elasticsearch.conf
+++ b/etc/icinga2/features-available/elasticsearch.conf
@@ -1,5 +1,3 @@
-library "perfdata"
-
 object ElasticsearchWriter "elasticsearch" {
   //host = "127.0.0.1"
   //port = 9200
diff --git a/etc/icinga2/features-available/gelf.conf b/etc/icinga2/features-available/gelf.conf
index 2db44ef7e..c14c86408 100644
--- a/etc/icinga2/features-available/gelf.conf
+++ b/etc/icinga2/features-available/gelf.conf
@@ -4,8 +4,6 @@
  * Logstash or any other receiver.
  */
 
-library "perfdata"
-
 object GelfWriter "gelf" {
   //host = "127.0.0.1"
   //port = 12201
diff --git a/etc/icinga2/features-available/graphite.conf b/etc/icinga2/features-available/graphite.conf
index f2e59d9e8..ae8a9288f 100644
--- a/etc/icinga2/features-available/graphite.conf
+++ b/etc/icinga2/features-available/graphite.conf
@@ -3,8 +3,6 @@
  * performance data to a graphite tcp socket.
  */
 
-library "perfdata"
-
 object GraphiteWriter "graphite" {
   //host = "127.0.0.1"
   //port = 2003
diff --git a/etc/icinga2/features-available/ido-mysql.conf b/etc/icinga2/features-available/ido-mysql.conf
index beab89f4c..7b44c23f2 100644
--- a/etc/icinga2/features-available/ido-mysql.conf
+++ b/etc/icinga2/features-available/ido-mysql.conf
@@ -1,10 +1,8 @@
 /**
- * The db_ido_mysql library implements IDO functionality
- * for MySQL.
+ * The IdoMysqlConnection type implements MySQL support
+ * for DB IDO.
  */
 
-library "db_ido_mysql"
-
 object IdoMysqlConnection "ido-mysql" {
   //user = "icinga"
   //password = "icinga"
diff --git a/etc/icinga2/features-available/ido-pgsql.conf b/etc/icinga2/features-available/ido-pgsql.conf
index 2a20afa9a..9f3c13297 100644
--- a/etc/icinga2/features-available/ido-pgsql.conf
+++ b/etc/icinga2/features-available/ido-pgsql.conf
@@ -1,10 +1,8 @@
 /**
- * The db_ido_pgsql library implements IDO functionality
- * for PostgreSQL.
+ * The IdoPgsqlConnection type implements PostgreSQL support
+ * for DB IDO.
  */
 
-library "db_ido_pgsql"
-
 object IdoPgsqlConnection "ido-pgsql" {
   //user = "icinga"
   //password = "icinga"
diff --git a/etc/icinga2/features-available/influxdb.conf b/etc/icinga2/features-available/influxdb.conf
index 20f9ed253..af8423577 100644
--- a/etc/icinga2/features-available/influxdb.conf
+++ b/etc/icinga2/features-available/influxdb.conf
@@ -3,8 +3,6 @@
  * performance data to an InfluxDB HTTP API
  */
 
-library "perfdata"
-
 object InfluxdbWriter "influxdb" {
   //host = "127.0.0.1"
   //port = 8086
diff --git a/etc/icinga2/features-available/livestatus.conf b/etc/icinga2/features-available/livestatus.conf
index 45d44d6b9..246c085e3 100644
--- a/etc/icinga2/features-available/livestatus.conf
+++ b/etc/icinga2/features-available/livestatus.conf
@@ -1,8 +1,6 @@
 /**
- *  The livestatus library implements the livestatus query protocol.
+ *  The LivestatusListener type implements the Livestatus query protocol.
  */
 
-library "livestatus"
-
 object LivestatusListener "livestatus" { }
 
diff --git a/etc/icinga2/features-available/notification.conf b/etc/icinga2/features-available/notification.conf
index aa22f6059..a3b59a841 100644
--- a/etc/icinga2/features-available/notification.conf
+++ b/etc/icinga2/features-available/notification.conf
@@ -2,6 +2,4 @@
  * The notification component takes care of executing service checks.
  */
 
-library "notification"
-
 object NotificationComponent "notification" { }
diff --git a/etc/icinga2/features-available/opentsdb.conf b/etc/icinga2/features-available/opentsdb.conf
index fcb547d01..540556c10 100644
--- a/etc/icinga2/features-available/opentsdb.conf
+++ b/etc/icinga2/features-available/opentsdb.conf
@@ -3,8 +3,6 @@
  * performance data to a OpenTSDB tcp socket.
  */
 
-library "perfdata"
-
 object OpenTsdbWriter "opentsdb" {
   //host = "127.0.0.1"
   //port = 4242
diff --git a/etc/icinga2/features-available/perfdata.conf b/etc/icinga2/features-available/perfdata.conf
index 356431f37..3ba863540 100644
--- a/etc/icinga2/features-available/perfdata.conf
+++ b/etc/icinga2/features-available/perfdata.conf
@@ -3,6 +3,4 @@
  * them in a regular interval.
  */
 
-library "perfdata"
-
 object PerfdataWriter "perfdata" { }
diff --git a/etc/icinga2/features-available/statusdata.conf b/etc/icinga2/features-available/statusdata.conf
index af02aa521..bb81c9617 100644
--- a/etc/icinga2/features-available/statusdata.conf
+++ b/etc/icinga2/features-available/statusdata.conf
@@ -4,7 +4,5 @@
  * hosts and services.
  */
 
-library "compat"
-
 object StatusDataWriter "status" { }