diff --git a/extensions/auth-basic/pkg/config/config.go b/extensions/auth-basic/pkg/config/config.go
index 2632ac9b1..162903407 100644
--- a/extensions/auth-basic/pkg/config/config.go
+++ b/extensions/auth-basic/pkg/config/config.go
@@ -50,7 +50,7 @@ type GRPCConfig struct {
 }
 
 type AuthProviders struct {
-	JSON        JSONProvider        `yaml:"json"`
+	JSON        JSONProvider        `yaml:"json"` // not supported by the oCIS product, therefore not part of docs
 	LDAP        LDAPProvider        `yaml:"ldap"`
 	OwnCloudSQL OwnCloudSQLProvider `yaml:"owncloud_sql"`
 }
diff --git a/extensions/group/pkg/config/config.go b/extensions/group/pkg/config/config.go
index 415db0255..ceece5545 100644
--- a/extensions/group/pkg/config/config.go
+++ b/extensions/group/pkg/config/config.go
@@ -51,10 +51,10 @@ type GRPCConfig struct {
 }
 
 type Drivers struct {
-	JSON        JSONDriver
+	JSON        JSONDriver // not supported by the oCIS product, therefore not part of docs
 	LDAP        LDAPDriver
 	OwnCloudSQL OwnCloudSQLDriver
-	REST        RESTProvider
+	REST        RESTProvider // not supported by the oCIS product, therefore not part of docs
 }
 
 type JSONDriver struct {
diff --git a/extensions/storage-users/pkg/config/config.go b/extensions/storage-users/pkg/config/config.go
index 7cb288814..e47bd0179 100644
--- a/extensions/storage-users/pkg/config/config.go
+++ b/extensions/storage-users/pkg/config/config.go
@@ -70,10 +70,10 @@ type HTTPConfig struct {
 }
 
 type Drivers struct {
-	EOS         EOSDriver
-	Local       LocalDriver
+	EOS         EOSDriver   `yaml:",omitempty"` // not supported by the oCIS product, therefore not part of docs
+	Local       LocalDriver `yaml:",omitempty"` // not supported by the oCIS product, therefore not part of docs
 	OCIS        OCISDriver
-	S3          S3Driver
+	S3          S3Driver `yaml:",omitempty"` // not supported by the oCIS product, therefore not part of docs
 	S3NG        S3NGDriver
 	OwnCloudSQL OwnCloudSQLDriver
 }
diff --git a/extensions/storage-users/pkg/config/defaults/defaultconfig.go b/extensions/storage-users/pkg/config/defaults/defaultconfig.go
index b29e9daa9..87c0bb4cd 100644
--- a/extensions/storage-users/pkg/config/defaults/defaultconfig.go
+++ b/extensions/storage-users/pkg/config/defaults/defaultconfig.go
@@ -1,7 +1,6 @@
 package defaults
 
 import (
-	"os"
 	"path/filepath"
 
 	"github.com/owncloud/ocis/extensions/storage-users/pkg/config"
@@ -43,25 +42,6 @@ func DefaultConfig() *config.Config {
 		MountID:       "1284d238-aa92-42ce-bdc4-0b0000009157",
 		Driver:        "ocis",
 		Drivers: config.Drivers{
-			EOS: config.EOSDriver{
-				Root:             "/eos/dockertest/reva",
-				ShareFolder:      "/Shares",
-				UserLayout:       "{{substr 0 1 .Username}}/{{.Username}}",
-				ShadowNamespace:  "",
-				UploadsNamespace: "",
-				EosBinary:        "/usr/bin/eos",
-				XrdcopyBinary:    "/usr/bin/xrdcopy",
-				MasterURL:        "root://eos-mgm1.eoscluster.cern.ch:1094",
-				GRPCURI:          "",
-				SlaveURL:         "root://eos-mgm1.eoscluster.cern.ch:1094",
-				CacheDirectory:   os.TempDir(),
-				GatewaySVC:       "127.0.0.1:9142",
-			},
-			Local: config.LocalDriver{
-				Root:        filepath.Join(defaults.BaseDataPath(), "storage", "local", "users"),
-				ShareFolder: "/Shares",
-				UserLayout:  "{{.Username}}",
-			},
 			OwnCloudSQL: config.OwnCloudSQLDriver{
 				Root:          filepath.Join(defaults.BaseDataPath(), "storage", "owncloud"),
 				ShareFolder:   "/Shares",
@@ -73,9 +53,6 @@ func DefaultConfig() *config.Config {
 				DBPort:        3306,
 				DBName:        "owncloud",
 			},
-			S3: config.S3Driver{
-				Region: "default",
-			},
 			S3NG: config.S3NGDriver{
 				Root:                       filepath.Join(defaults.BaseDataPath(), "storage", "users"),
 				ShareFolder:                "/Shares",
diff --git a/extensions/user/pkg/config/config.go b/extensions/user/pkg/config/config.go
index 41cc0ab6e..8a2272438 100644
--- a/extensions/user/pkg/config/config.go
+++ b/extensions/user/pkg/config/config.go
@@ -51,10 +51,10 @@ type GRPCConfig struct {
 }
 
 type Drivers struct {
-	JSON        JSONDriver
+	JSON        JSONDriver // not supported by the oCIS product, therefore not part of docs
 	LDAP        LDAPDriver
 	OwnCloudSQL OwnCloudSQLDriver
-	REST        RESTProvider
+	REST        RESTProvider // not supported by the oCIS product, therefore not part of docs
 }
 
 type JSONDriver struct {