diff --git a/src/index.js b/src/index.js
index 02eeec8d..26137f1e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -166,7 +166,7 @@ export const any: InternalQueryAnyType = async (connection, clientConfiguration,
 
 const createConnection = async (
   connectionConfiguration: DatabaseConfigurationType,
-  clientConfiguration: ClientConfigurationType
+  clientConfiguration: ClientConfigurationType = {}
 ): Promise<DatabaseSingleConnectionType> => {
   const pool = new pg.Pool(connectionConfiguration);
 
@@ -188,7 +188,7 @@ const createConnection = async (
 
 const createPool = (
   connectionConfiguration: DatabaseConfigurationType,
-  clientConfiguration: ClientConfigurationType
+  clientConfiguration: ClientConfigurationType = {}
 ): DatabasePoolConnectionType => {
   const pool = new pg.Pool(typeof connectionConfiguration === 'string' ? parseConnectionString(connectionConfiguration) : connectionConfiguration);
 
diff --git a/src/types.js b/src/types.js
index 5fbd9ef6..9e892b52 100644
--- a/src/types.js
+++ b/src/types.js
@@ -11,9 +11,9 @@ export type ClientErrorsConfigurationType = {|
   +NotFoundError?: Class<Error>
 |};
 
-export type ClientConfigurationType = {|
+export type ClientConfigurationType = {
   +errors?: ClientErrorsConfigurationType
-|};
+};
 
 export type DatabaseConfigurationType = DatabaseConnectionUriType |
   {|