diff --git a/source/net/yacy/document/content/SurrogateReader.java b/source/net/yacy/document/content/SurrogateReader.java
index 0bb47b8f3..a24f77678 100644
--- a/source/net/yacy/document/content/SurrogateReader.java
+++ b/source/net/yacy/document/content/SurrogateReader.java
@@ -178,12 +178,11 @@ public class SurrogateReader extends DefaultHandler implements Runnable {
     
     private boolean isSolrDump() {
         try {
-            if (this.inputStream.available() < 60) return false;
             byte[] b = new byte[100];
             this.inputStream.read(b);
             try {
                 String s = UTF8.String(b);
-                if (s.contains("<response>") && s.contains("<result>")) {
+                if ((s.contains("<response>") && s.contains("<result>")) || s.startsWith("<doc>")) {
                     this.inputStream.unread(b);
                     return true;
                 }
diff --git a/source/net/yacy/search/Switchboard.java b/source/net/yacy/search/Switchboard.java
index bae47c53f..4d9464ed0 100644
--- a/source/net/yacy/search/Switchboard.java
+++ b/source/net/yacy/search/Switchboard.java
@@ -1945,9 +1945,7 @@ public final class Switchboard extends serverSwitch {
         InputStream is = null;
         try {
             is = new BufferedInputStream(new FileInputStream(infile));
-            if ( s.endsWith(".gz") ) {
-                is = new GZIPInputStream(is);
-            }
+            if (s.endsWith(".gz")) is = new GZIPInputStream(is, 65535);
             processSurrogate(is, infile.getName());
         } catch (final IOException e ) {
             ConcurrentLog.logException(e);