diff --git a/jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHttpOutputInterceptor.java b/jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHttpOutputInterceptor.java
index 64e4b4a3af5..dacc476447a 100644
--- a/jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHttpOutputInterceptor.java
+++ b/jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHttpOutputInterceptor.java
@@ -348,9 +348,11 @@ public class GzipHttpOutputInterceptor implements HttpOutput.Interceptor
             BufferUtil.compact(_buffer);
             int off=_buffer.arrayOffset()+_buffer.limit();
             int len=_buffer.capacity()-_buffer.limit() - (_last?8:0);
-            int produced=_deflater.deflate(_buffer.array(),off,len,Deflater.NO_FLUSH);
-            
-            _buffer.limit(_buffer.limit()+produced);
+            if (len>0)
+            {
+                int produced=_deflater.deflate(_buffer.array(),off,len,Deflater.NO_FLUSH);
+                _buffer.limit(_buffer.limit()+produced);
+            }
             boolean finished=_deflater.finished();
             
             if (finished)