diff --git a/poi-ooxml/src/main/java/org/apache/poi/xwpf/usermodel/XWPFRun.java b/poi-ooxml/src/main/java/org/apache/poi/xwpf/usermodel/XWPFRun.java
index 56e0c6d8f2..a8a1af4ca9 100644
--- a/poi-ooxml/src/main/java/org/apache/poi/xwpf/usermodel/XWPFRun.java
+++ b/poi-ooxml/src/main/java/org/apache/poi/xwpf/usermodel/XWPFRun.java
@@ -1430,8 +1430,9 @@ public class XWPFRun implements ISDTContents, IRunElement, CharacterRun {
         }
         if (o instanceof CTFtnEdnRef) {
             CTFtnEdnRef ftn = (CTFtnEdnRef) o;
+            final int i = ftn.getId() == null ? -1 : ftn.getId().intValue();
             String footnoteRef = ftn.getDomNode().getLocalName().equals("footnoteReference") ?
-                    "[footnoteRef:" + ftn.getId().intValue() + "]" : "[endnoteRef:" + ftn.getId().intValue() + "]";
+                    "[footnoteRef:" + i + "]" : "[endnoteRef:" + i + "]";
             text.append(footnoteRef);
         }
     }
diff --git a/test-data/document/crash-517626e815e0afa9decd0ebb6d1dee63fb9907dd.docx b/test-data/document/crash-517626e815e0afa9decd0ebb6d1dee63fb9907dd.docx
new file mode 100644
index 0000000000..e98f30e13f
Binary files /dev/null and b/test-data/document/crash-517626e815e0afa9decd0ebb6d1dee63fb9907dd.docx differ