diff --git a/library/src/main/java/com/leocardz/link/preview/library/TextCrawler.java b/library/src/main/java/com/leocardz/link/preview/library/TextCrawler.java
index 19ccc12..0e89540 100644
--- a/library/src/main/java/com/leocardz/link/preview/library/TextCrawler.java
+++ b/library/src/main/java/com/leocardz/link/preview/library/TextCrawler.java
@@ -277,7 +277,7 @@ private String cannonicalPage(String url) {
 
 		int urlLength = url.length();
 		for (int i = 0; i < urlLength; i++) {
-			if(getCodeTask.isCancelled()){
+			if (getCodeTask == null || getCodeTask.isCancelled()) {
 				break;
 			}
 			if (url.charAt(i) != '/')