diff --git a/src/main/java/org/metanorma/fop/annotations/Annotation.java b/src/main/java/org/metanorma/fop/annotations/Annotation.java
index c1e8a28..7f2e367 100644
--- a/src/main/java/org/metanorma/fop/annotations/Annotation.java
+++ b/src/main/java/org/metanorma/fop/annotations/Annotation.java
@@ -397,9 +397,12 @@ private void fixAnnotationTags(COSArray oArray, COSObject parentObject, int leve
                         }
                     }
                 }
-
-                COSArray oA_K = (COSArray) oArrayItem.getItem(COSName.K);
-                fixAnnotationTags(oA_K, oArrayItem, ++level);
+                try {
+                    COSArray oA_K = (COSArray) oArrayItem.getItem(COSName.K);
+                    fixAnnotationTags(oA_K, oArrayItem, ++level);
+                } catch (Exception e) {
+                    //
+                }
             }
         }
     }