diff --git a/smack-compression-jzlib/src/main/java/org/jivesoftware/smack/compression/jzlib/JzlibInputOutputStream.java b/smack-compression-jzlib/src/main/java/org/jivesoftware/smack/compression/jzlib/JzlibInputOutputStream.java
index 68e4d16d5..f129dc991 100644
--- a/smack-compression-jzlib/src/main/java/org/jivesoftware/smack/compression/jzlib/JzlibInputOutputStream.java
+++ b/smack-compression-jzlib/src/main/java/org/jivesoftware/smack/compression/jzlib/JzlibInputOutputStream.java
@@ -40,7 +40,7 @@ public class JzlibInputOutputStream extends XMPPInputOutputStream {
     }
 
     public JzlibInputOutputStream() {
-        compressionMethod = "zlib";
+        super("zlib");
     }
 
     @Override
diff --git a/smack-core/src/main/java/org/jivesoftware/smack/compression/Java7ZlibInputOutputStream.java b/smack-core/src/main/java/org/jivesoftware/smack/compression/Java7ZlibInputOutputStream.java
index 873f8b599..08ca3c179 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/compression/Java7ZlibInputOutputStream.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/compression/Java7ZlibInputOutputStream.java
@@ -63,7 +63,7 @@ public class Java7ZlibInputOutputStream extends XMPPInputOutputStream {
     }
 
     public Java7ZlibInputOutputStream() {
-        compressionMethod = "zlib";
+        super("zlib");
     }
 
     @Override
diff --git a/smack-core/src/main/java/org/jivesoftware/smack/compression/XMPPInputOutputStream.java b/smack-core/src/main/java/org/jivesoftware/smack/compression/XMPPInputOutputStream.java
index 6fd289325..0092e9d01 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/compression/XMPPInputOutputStream.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/compression/XMPPInputOutputStream.java
@@ -35,7 +35,11 @@ public abstract class XMPPInputOutputStream {
         XMPPInputOutputStream.flushMethod = flushMethod;
     }
 
-    protected String compressionMethod;
+    protected final String compressionMethod;
+
+    protected XMPPInputOutputStream(String compressionMethod) {
+        this.compressionMethod = compressionMethod;
+    }
 
     public String getCompressionMethod() {
         return compressionMethod;