diff --git a/tests/WP_SQLite_Translator_Tests.php b/tests/WP_SQLite_Translator_Tests.php
index 21118fb..f989972 100644
--- a/tests/WP_SQLite_Translator_Tests.php
+++ b/tests/WP_SQLite_Translator_Tests.php
@@ -129,15 +129,15 @@ public function testRegexpReplace() {
 		$this->assertQuery( "SELECT * FROM _options WHERE REGEXP_REPLACE(option_name, '(-ignore|-remove)', '') = 'test'" );
 		$this->assertCount( 2, $this->engine->get_query_results() );
 
-		$this->assertQuery( 'SELECT REGEXP_REPLACE( null, 'a', 'x') as result' );
+		$this->assertQuery( "SELECT REGEXP_REPLACE( null, 'a', 'x') as result" );
 		$results = $this->engine->get_query_results();
 		$this->assertEquals( null, $results[0]->result );
 
-		$this->assertQuery( 'SELECT REGEXP_REPLACE( 'abc', null, 'x') as result' );
+		$this->assertQuery( "SELECT REGEXP_REPLACE( 'abc', null, 'x') as result" );
 		$results = $this->engine->get_query_results();
 		$this->assertEquals( null, $results[0]->result );
 
-		$this->assertQuery( 'SELECT REGEXP_REPLACE( 'abc', 'a', null) as result' );
+		$this->assertQuery( "SELECT REGEXP_REPLACE( 'abc', 'a', null) as result" );
 		$results = $this->engine->get_query_results();
 		$this->assertEquals( null, $results[0]->result );
 	}
diff --git a/wp-includes/sqlite/class-wp-sqlite-pdo-user-defined-functions.php b/wp-includes/sqlite/class-wp-sqlite-pdo-user-defined-functions.php
index 9030d81..e8c00a0 100644
--- a/wp-includes/sqlite/class-wp-sqlite-pdo-user-defined-functions.php
+++ b/wp-includes/sqlite/class-wp-sqlite-pdo-user-defined-functions.php
@@ -518,7 +518,7 @@ public function regexp_replace( $field, $pattern, $replacement ) {
 		 * be reasonably safe since PHP does not allow null bytes in
 		 * regular expressions anyway.
 		 */
-		
+
 		/* Return null if one of the required parameter is null */
 		if ( is_null( $field ) || is_null( $pattern ) || is_null( $replacement ) ) {
 			return null;