diff --git a/src/ooxml/java/org/apache/poi/openxml4j/opc/PackagingURIHelper.java b/src/ooxml/java/org/apache/poi/openxml4j/opc/PackagingURIHelper.java
index 4d4b917ed4..a80ba95bc5 100644
--- a/src/ooxml/java/org/apache/poi/openxml4j/opc/PackagingURIHelper.java
+++ b/src/ooxml/java/org/apache/poi/openxml4j/opc/PackagingURIHelper.java
@@ -760,7 +760,7 @@ public final class PackagingURIHelper {
     };
 
     private static boolean isUnsafe(int ch) {
-        return ch >= 0x80 || Character.isWhitespace(ch);
+        return ch >= 0x80 || ch == 0x7C || Character.isWhitespace(ch);
     }
 
 }
diff --git a/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackagingURIHelper.java b/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackagingURIHelper.java
index 9969187422..3bbce458cb 100644
--- a/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackagingURIHelper.java
+++ b/src/ooxml/testcases/org/apache/poi/openxml4j/opc/TestPackagingURIHelper.java
@@ -127,7 +127,8 @@ public class TestPackagingURIHelper {
                 "..\\cygwin\\home\\yegor\\dinom\\%5baccess%5d.2010-10-26.log",
                 "#'Instructions (Text)'!B21",
                 "#'性'!B21",
-                "javascript://"
+                "javascript://",
+                "#ctl||rId16||cmdAddAction||_x0000_i1029"
         };
 
         for(String s : href){