--- src/ZrtpStateClass.cxx
+++ src/ZrtpStateClass.cxx
@@ -815,7 +815,7 @@
     DEBUGOUT((cout << "Checking for match in SecureState.\n"));
 
     char *msg, first, last;
-    uint8_t *pkt;
+    uint8_t *pkt = NULL;
 
     if (event->type == ZrtpPacket) {
 	pkt = event->data.packet;