diff --git a/jzlib-javadoc-fixes.patch b/jzlib-javadoc-fixes.patch
new file mode 100644
index 0000000..fa8f030
--- /dev/null
+++ b/jzlib-javadoc-fixes.patch
@@ -0,0 +1,21 @@
+--- src/main/java/com/jcraft/jzlib/ZStream.java.orig	2014-05-09 12:35:05.241400959 +0100
++++ src/main/java/com/jcraft/jzlib/ZStream.java	2014-05-09 12:35:35.093886286 +0100
+@@ -371,6 +371,7 @@
+   /**
+    * Those methods are expected to be override by Inflater and Deflater.
+    * In the future, they will become abstract methods.
++   * @return an error code
+    */ 
+   public int end(){ return Z_OK; }
+   public boolean finished(){ return false; }
+--- src/main/java/com/jcraft/jzlib/GZIPHeader.java.orig	2014-05-09 12:37:35.358812069 +0100
++++ src/main/java/com/jcraft/jzlib/GZIPHeader.java	2014-05-09 12:37:40.267727366 +0100
+@@ -37,7 +37,7 @@
+ import java.io.UnsupportedEncodingException;
+ 
+ /**
+- * @see "http://www.ietf.org/rfc/rfc1952.txt"
++ * See "http://www.ietf.org/rfc/rfc1952.txt"
+  */
+ public class GZIPHeader implements Cloneable {
+ 
diff --git a/jzlib.spec b/jzlib.spec
index 2003923..f1bf143 100644
--- a/jzlib.spec
+++ b/jzlib.spec
@@ -25,6 +25,8 @@ Group:          Development/Libraries/Java
 URL:            http://www.jcraft.com/jzlib/
 Source0:        https://github.com/ymnk/jzlib/archive/%{version}.tar.gz
 Source1:        %{name}_build.xml
+# This patch is sent upstream: https://github.com/ymnk/jzlib/pull/15
+Patch0:         jzlib-javadoc-fixes.patch
 BuildRequires:  ant >= 1.6
 BuildRequires:  fdupes
 BuildRequires:  java-devel
@@ -55,6 +57,7 @@ Group:          Documentation/HTML
 
 %prep
 %setup -q
+%patch0
 cp %{SOURCE1} build.xml
 
 # bnc#500524