diff --git a/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
index afc55d955..a2aaa9433 100644
--- a/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.3.0",
 
     "name"      : "CAS Authentication Extension",
-    "namespace" : "guac-cas",
+    "namespace" : "cas",
 
     "authProviders" : [
         "org.apache.guacamole.auth.cas.CASAuthenticationProvider"
diff --git a/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json
index 21d43dcf2..e443828af 100644
--- a/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.2.0",
 
     "name"      : "HTTP Header Authentication Extension",
-    "namespace" : "guac-header",
+    "namespace" : "header",
 
     "authProviders" : [
         "org.apache.guacamole.auth.header.HTTPHeaderAuthenticationProvider"
diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json
index 074886f74..58bab7e87 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.3.0",
 
     "name"      : "MySQL Authentication",
-    "namespace" : "guac-mysql",
+    "namespace" : "mysql",
 
     "authProviders" : [
         "org.apache.guacamole.auth.mysql.MySQLAuthenticationProvider",
diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json
index 1dd2870cb..e882f7670 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.3.0",
 
     "name"      : "PostgreSQL Authentication",
-    "namespace" : "guac-postgresql",
+    "namespace" : "postgresql",
 
     "authProviders" : [
         "org.apache.guacamole.auth.postgresql.PostgreSQLAuthenticationProvider",
diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json
index 149905331..1bcb08374 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.3.0",
 
     "name"      : "SQLServer Authentication",
-    "namespace" : "guac-sqlserver",
+    "namespace" : "sqlserver",
 
     "authProviders" : [
         "org.apache.guacamole.auth.sqlserver.SQLServerAuthenticationProvider",
diff --git a/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json
index a9ff464c5..295c3941e 100644
--- a/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.3.0",
 
     "name"      : "Encrypted JSON Authentication",
-    "namespace" : "guac-json",
+    "namespace" : "json",
 
     "authProviders" : [
         "org.apache.guacamole.auth.json.JSONAuthenticationProvider"
diff --git a/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json
index c4734320a..82a9dca92 100644
--- a/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.3.0",
 
     "name"      : "LDAP Authentication",
-    "namespace" : "guac-ldap",
+    "namespace" : "ldap",
 
     "authProviders" : [
         "org.apache.guacamole.auth.ldap.LDAPAuthenticationProvider"
diff --git a/extensions/guacamole-auth-openid/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-openid/src/main/resources/guac-manifest.json
index 3a9aca941..b48bd2d31 100644
--- a/extensions/guacamole-auth-openid/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-openid/src/main/resources/guac-manifest.json
@@ -3,7 +3,7 @@
     "guacamoleVersion" : "1.3.0",
 
     "name"      : "OpenID Authentication Extension",
-    "namespace" : "guac-openid",
+    "namespace" : "openid",
 
     "authProviders" : [
         "org.apache.guacamole.auth.openid.OpenIDAuthenticationProvider"