diff --git a/src/js/lightbox.js b/src/js/lightbox.js
index ee0492c..ed7fee8 100644
--- a/src/js/lightbox.js
+++ b/src/js/lightbox.js
@@ -106,8 +106,8 @@
     // while Lightbox is opened will keep the focus on or inside one of these
     // two elements.
     //
-    // We do this so we can prevent propogation of the Esc keypress when
-    // Lightbox is open. This prevents it from intefering with other components
+    // We do this so we can prevent propagation of the Esc keypress when
+    // Lightbox is open. This prevents it from interfering with other components
     // on the page below.
     //
     // Github issue: https://github.com/lokesh/lightbox2/issues/663