diff --git a/packages/style-engine/class-wp-style-engine-css-declarations.php b/packages/style-engine/class-wp-style-engine-css-declarations.php
index b2b56d341ea00..c3bef3630282b 100644
--- a/packages/style-engine/class-wp-style-engine-css-declarations.php
+++ b/packages/style-engine/class-wp-style-engine-css-declarations.php
@@ -197,6 +197,6 @@ public function get_declarations_string( $should_prettify = false, $indent_count
 	 * @return string The sanitized property name.
 	 */
 	protected function sanitize_property( $property ) {
-		return trim( sanitize_key( $property ) );
+		return sanitize_key( $property );
 	}
 }