diff --git a/src/js/simplemde.js b/src/js/simplemde.js
index 2de43f3..91fb5a4 100644
--- a/src/js/simplemde.js
+++ b/src/js/simplemde.js
@@ -1456,6 +1456,7 @@ SimpleMDE.prototype.markdown = function(text) {
 			}
 		}
 
+		markedOptions.sanitize = true;
 
 		// Set options
 		marked.setOptions(markedOptions);