diff --git a/src/js/constants.js b/src/js/constants.js
index 4f85d60d9..32da6235c 100644
--- a/src/js/constants.js
+++ b/src/js/constants.js
@@ -57,10 +57,10 @@ export const EVENT_ZOOM = 'zoom';
 export const MIME_TYPE_JPEG = 'image/jpeg';
 
 // RegExps
-export const REGEXP_ACTIONS = /^e|w|s|n|se|sw|ne|nw|all|crop|move|zoom$/;
+export const REGEXP_ACTIONS = /^(e|w|s|n|se|sw|ne|nw|all|crop|move|zoom)$/;
 export const REGEXP_DATA_URL = /^data:/;
 export const REGEXP_DATA_URL_JPEG = /^data:image\/jpeg;base64,/;
-export const REGEXP_TAG_NAME = /^img|canvas$/i;
+export const REGEXP_TAG_NAME = /^(img|canvas)$/i;
 
 // Misc
 // Inspired by the default width and height of a canvas element.