diff --git a/src/core/annotation.js b/src/core/annotation.js
index 06ba73ab0..bd4fed891 100644
--- a/src/core/annotation.js
+++ b/src/core/annotation.js
@@ -485,7 +485,7 @@ var LinkAnnotation = (function LinkAnnotationClosure() {
     data.annotationType = AnnotationType.LINK;
 
     var action = dict.get('A');
-    if (action) {
+    if (action && isDict(action)) {
       var linkType = action.get('S').name;
       if (linkType === 'URI') {
         var url = action.get('URI');