diff --git a/lib/class-wp-theme-json-gutenberg.php b/lib/class-wp-theme-json-gutenberg.php
index 90931175dd908..591ead35fb78a 100644
--- a/lib/class-wp-theme-json-gutenberg.php
+++ b/lib/class-wp-theme-json-gutenberg.php
@@ -819,11 +819,10 @@ protected static function sanitize( $input, $valid_block_names, $valid_element_n
 		$schema['settings']           = static::VALID_SETTINGS;
 		$schema['settings']['blocks'] = $schema_settings_blocks;
 
-
 		// For settings.typography.fontFamilies, make the $schema have all indexes present in the $input.
 		if ( isset( $input['settings']['typography']['fontFamilies'] ) ) {
 			// Do not handle the cases where the sanitization is called before font families are merged, since it will be handled again later.
-			if ( isset( $input['settings']['typography']['fontFamilies']['theme']) || isset( $input['settings']['typography']['fontFamilies']['custom'] ) ) {
+			if ( isset( $input['settings']['typography']['fontFamilies']['theme'] ) || isset( $input['settings']['typography']['fontFamilies']['custom'] ) ) {
 				return $output;
 			}
 			foreach ( $input['settings']['typography']['fontFamilies'] as $font_family_key => $value ) {