diff --git a/js/reveal.js b/js/reveal.js
index 79025468ceb..3c00d52d277 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -6003,7 +6003,7 @@
 			}
 		},
 
-		// Adds/remvoes a custom key binding
+		// Adds/removes a custom key binding
 		addKeyBinding: addKeyBinding,
 		removeKeyBinding: removeKeyBinding,
 
@@ -6012,7 +6012,7 @@
 		hasPlugin: hasPlugin,
 		getPlugin: getPlugin,
 
-		// Programatically triggers a keyboard event
+		// Programmatically triggers a keyboard event
 		triggerKey: function( keyCode ) {
 			onDocumentKeyDown( { keyCode: keyCode } );
 		},
diff --git a/plugin/highlight/highlight.js b/plugin/highlight/highlight.js
index b3599e88929..83305e11486 100644
--- a/plugin/highlight/highlight.js
+++ b/plugin/highlight/highlight.js
@@ -101,7 +101,8 @@ c:[{cN:"comment",b:/\(\*/,e:/\*\)/},e.ASM,e.QSM,e.CNM,{b:/\{/,e:/\}/,i:/:/}]}});
 
 		/**
 		 * Highlights a code block. If the <code> node has the
-		 * 'line-numbers' class we also generate slide numbers.
+		 * 'data-line-numbers' attribute we also generate slide
+		 * numbers.
 		 */
 		highlightBlock: function( block ) {
 
@@ -119,7 +120,7 @@ c:[{cN:"comment",b:/\(\*/,e:/\*\)/},e.ASM,e.QSM,e.CNM,{b:/\{/,e:/\}/,i:/:/}]}});
 
 		/**
 		 * Visually emphasize specific lines within a code block.
-		 * This onnly works on blocks with line numbering turned on.
+		 * This only works on blocks with line numbering turned on.
 		 *
 		 * @param {HTMLElement} block a <code> block
 		 * @param {String} [linesToHighlight] The lines that should be