diff --git a/httpclient-cache/src/main/java/org/apache/http/client/cache/impl/DefaultCacheEntrySerializer.java b/httpclient-cache/src/main/java/org/apache/http/client/cache/impl/DefaultCacheEntrySerializer.java
index 600af5fb9..cb7f3d455 100644
--- a/httpclient-cache/src/main/java/org/apache/http/client/cache/impl/DefaultCacheEntrySerializer.java
+++ b/httpclient-cache/src/main/java/org/apache/http/client/cache/impl/DefaultCacheEntrySerializer.java
@@ -62,7 +62,9 @@ public void writeTo(CacheEntry cacheEntry, OutputStream os) throws IOException {
             // oos.writeObject(sheaders);
         } finally {
             try {
-                oos.close();
+                if (oos != null) {
+                    oos.close();
+                }
             } catch (Exception ignore) {
             }
             try {
@@ -95,7 +97,9 @@ public CacheEntry readFrom(InputStream is) throws IOException {
             throw new RuntimeException(cnfe);
         } finally {
             try {
-                ois.close();
+                if (ois != null) {
+                    ois.close();
+                }
             } catch (Exception ignore) {
             }
             try {