diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/connection/ConnectionService.java b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/connection/ConnectionService.java
index f3fb48261..53c2d3b5d 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/connection/ConnectionService.java
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/connection/ConnectionService.java
@@ -204,7 +204,7 @@ public class ConnectionService extends ModeledGroupedDirectoryObjectService<Mode
         Map<String, String> parameters = connection.getConfiguration().getParameters();
         
         // Convert parameters to model objects
-        Collection<ParameterModel> parameterModels = new ArrayList(parameters.size());
+        Collection<ParameterModel> parameterModels = new ArrayList<ParameterModel>(parameters.size());
         for (Map.Entry<String, String> parameterEntry : parameters.entrySet()) {
 
             // Get parameter name and value
diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/permission/ModeledObjectPermissionService.java b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/permission/ModeledObjectPermissionService.java
index ad4f65859..d939fbd49 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/permission/ModeledObjectPermissionService.java
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/permission/ModeledObjectPermissionService.java
@@ -106,7 +106,7 @@ public abstract class ModeledObjectPermissionService
             return false;
 
         // Produce collection of affected identifiers
-        Collection<String> affectedIdentifiers = new HashSet(permissions.size());
+        Collection<String> affectedIdentifiers = new HashSet<String>(permissions.size());
         for (ObjectPermission permission : permissions)
             affectedIdentifiers.add(permission.getObjectIdentifier());