diff --git a/M17Network.cpp b/M17Network.cpp
index 6fa65ae..56a2135 100644
--- a/M17Network.cpp
+++ b/M17Network.cpp
@@ -76,7 +76,7 @@ bool CM17Network::open()
 
 bool CM17Network::write(const unsigned char* data)
 {
-	if (m_addrLen != 0U)
+	if (m_addrLen == 0U)
 		return false;
 
 	assert(data != NULL);
diff --git a/Version.h b/Version.h
index 27d6669..3f190ee 100644
--- a/Version.h
+++ b/Version.h
@@ -19,6 +19,6 @@
 #if !defined(VERSION_H)
 #define	VERSION_H
 
-const char* VERSION = "20201111";
+const char* VERSION = "20201113";
 
 #endif