diff --git a/src/main/org/apache/ant/compress/util/SevenZStreamFactory.java b/src/main/org/apache/ant/compress/util/SevenZStreamFactory.java
index a9d1269..40d3517 100644
--- a/src/main/org/apache/ant/compress/util/SevenZStreamFactory.java
+++ b/src/main/org/apache/ant/compress/util/SevenZStreamFactory.java
@@ -112,7 +112,7 @@
             zipFile = new SevenZOutputFile(file);
         }
 
-        public void close() {
+        public void close() throws IOException {
             zipFile.close();
         }