diff --git a/jni/libzrtp/sources/zrtp/ZrtpPacketErrorAck.cpp b/jni/libzrtp/sources/zrtp/ZrtpPacketErrorAck.cpp
new file mode 100644
index 0000000..d0d0f33
--- /dev/null
+++ b/jni/libzrtp/sources/zrtp/ZrtpPacketErrorAck.cpp
@@ -0,0 +1,42 @@
+/*
+  Copyright (C) 2006-2013 Werner Dittmann
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * Authors: Werner Dittmann <Werner.Dittmann@t-online.de>
+ */
+
+#include <libzrtpcpp/ZrtpPacketErrorAck.h>
+
+ZrtpPacketErrorAck::ZrtpPacketErrorAck() {
+    DEBUGOUT((fprintf(stdout, "Creating ErrorAck packet without data\n")));
+
+    zrtpHeader = &data.hdr;	// the standard header
+
+    setZrtpId();
+    setLength((sizeof (ErrorAckPacket_t) / ZRTP_WORD_SIZE) - 1);
+    setMessageType((uint8_t*)ErrorAckMsg);
+}
+
+ZrtpPacketErrorAck::ZrtpPacketErrorAck(uint8_t *data) {
+    DEBUGOUT((fprintf(stdout, "Creating ErrorAck packet from data\n")));
+
+    zrtpHeader = (zrtpPacketHeader_t *)&((ErrorAckPacket_t*)data)->hdr;	// the standard header
+}
+
+ZrtpPacketErrorAck::~ZrtpPacketErrorAck() {
+    DEBUGOUT((fprintf(stdout, "Deleting ErrorAck packet: alloc: %x\n", allocated)));
+}