diff --git a/src/ooxml/testcases/org/apache/poi/poifs/crypt/TestDecryptor.java b/src/ooxml/testcases/org/apache/poi/poifs/crypt/TestDecryptor.java
index d0f2c67f51..fa04dde5e9 100644
--- a/src/ooxml/testcases/org/apache/poi/poifs/crypt/TestDecryptor.java
+++ b/src/ooxml/testcases/org/apache/poi/poifs/crypt/TestDecryptor.java
@@ -91,6 +91,8 @@ public class TestDecryptor {
                 zin.skip(zin.available());
             }
         }
+        
+        zin.close();
     }
 
     @Test