diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7658d0de..36cebd62 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 MQTT-Client-Framework iOS/OSX/tvOS Release Notes
 ================================================
 
+## MQTT-Client-Framework 0.6.3
+> Release date 2016-01-17
+
+[FIX] Ignore incoming non-UTF8 topic string closes #94
+[FIX] Crash b/c input stream not closed in timeout situation closes #93
+
 ## MQTT-Client-Framework 0.6.2
 > Release date 2016-01-05
 
diff --git a/MQTTClient.podspec b/MQTTClient.podspec
index b60adf2f..aef91800 100644
--- a/MQTTClient.podspec
+++ b/MQTTClient.podspec
@@ -1,13 +1,13 @@
 Pod::Spec.new do |mqttc|
 	mqttc.name         = "MQTTClient"
-	mqttc.version      = "0.6.2"
+	mqttc.version      = "0.6.3"
 	mqttc.summary      = "iOS, OSX and tvOS native ObjectiveC MQTT Client Framework"
 	mqttc.homepage     = "https://github.com/ckrey/MQTT-Client-Framework"
 	mqttc.license      = { :type => "EPLv1", :file => "LICENSE" }
 	mqttc.author       = { "Christoph Krey" => "krey.christoph@gmail.com" }
 	mqttc.source       = {
 		:git => "https://github.com/ckrey/MQTT-Client-Framework.git",
-		:tag => "0.6.2",
+		:tag => "0.6.3",
 		:submodules => true
 	}
 
diff --git a/MQTTClient/MQTTClient/MQTTCFSocketDecoder.m b/MQTTClient/MQTTClient/MQTTCFSocketDecoder.m
index e3f4f8d9..95fc3aaa 100644
--- a/MQTTClient/MQTTClient/MQTTCFSocketDecoder.m
+++ b/MQTTClient/MQTTClient/MQTTCFSocketDecoder.m
@@ -47,12 +47,9 @@ - (void)open {
 }
 
 - (void)close {
-    if (self.state == MQTTCFSocketDecoderStateReady || self.state == MQTTCFSocketDecoderStateError) {
-        [self.stream close];
-        [self.stream removeFromRunLoop:self.runLoop forMode:self.runLoopMode];
-        [self.stream setDelegate:nil];
-        self.state = MQTTCFSocketDecoderStateInitializing;
-    }
+    [self.stream close];
+    [self.stream removeFromRunLoop:self.runLoop forMode:self.runLoopMode];
+    [self.stream setDelegate:nil];
 }
 
 - (void)stream:(NSStream*)sender handleEvent:(NSStreamEvent)eventCode {
@@ -62,7 +59,7 @@ - (void)stream:(NSStream*)sender handleEvent:(NSStreamEvent)eventCode {
         self.state = MQTTCFSocketDecoderStateReady;
         [self.delegate decoderDidOpen:self];
     }
-
+    
     if (eventCode &  NSStreamEventHasBytesAvailable) {
         DDLogVerbose(@"[MQTTCFSocketDecoder] NSStreamEventHasBytesAvailable");
         if (self.state == MQTTCFSocketDecoderStateInitializing) {
diff --git a/MQTTClient/MQTTClient/MQTTSession.m b/MQTTClient/MQTTClient/MQTTSession.m
index fd8ffdb8..df8ef4b9 100644
--- a/MQTTClient/MQTTClient/MQTTSession.m
+++ b/MQTTClient/MQTTClient/MQTTSession.m
@@ -679,6 +679,11 @@ - (void)handlePublish:(MQTTMessage*)msg {
     NSData *topicData = [data subdataWithRange:NSMakeRange(2, topicLength)];
     NSString *topic = [[NSString alloc] initWithData:topicData
                                             encoding:NSUTF8StringEncoding];
+    if (!topic) {
+        topic = [[NSString alloc] initWithData:topicData
+                                      encoding:NSISOLatin1StringEncoding];
+        DDLogError(@"non UTF8 topic %@", topic);
+    }
     NSRange range = NSMakeRange(2 + topicLength, [data length] - topicLength - 2);
     data = [data subdataWithRange:range];
     if ([msg qos] == 0) {
diff --git a/MQTTClient/MQTTClientTests/MQTTClientPublishTests.m b/MQTTClient/MQTTClientTests/MQTTClientPublishTests.m
index c2a6cd2e..1782cfcd 100644
--- a/MQTTClient/MQTTClientTests/MQTTClientPublishTests.m
+++ b/MQTTClient/MQTTClientTests/MQTTClientPublishTests.m
@@ -116,6 +116,30 @@ - (void)testPublish_r0_q0_0xD800_MQTT_1_5_3_1 {
         [self testPublishCloseExpected:[@(__FUNCTION__) dataUsingEncoding:NSUTF8StringEncoding]
                                onTopic:stringWithD800
                                 retain:NO
+                               atLevel:MQTTQosLevelExactlyOnce];
+        [self shutdown:parameters];
+    }
+}
+
+/*
+ * [MQTT-1.5.3-1]
+ * The character data in a UTF-8 encoded string MUST be well-formed UTF-8 as defined by the
+ * Unicode specification [Unicode] and restated in RFC 3629 [RFC3629]. In particular this data MUST NOT
+ * include encodings of code points between U+D800 and U+DFFF. If a Server or Client receives a Control
+ * Packet containing ill-formed UTF-8 it MUST close the Network Connection.
+ */
+- (void)testPublish_r0_q0_0x9c_MQTT_1_5_3_1 {
+    NSData *data = [NSData dataWithBytes:"MQTTClient/abc\x9c\x9dxyz" length:19];
+    NSString *stringWith9c = [[NSString alloc] initWithData:data encoding:NSISOLatin1StringEncoding];
+    DDLogVerbose(@"stringWithNull(%lu) %@", (unsigned long)stringWith9c.length, stringWith9c.description);
+    
+    for (NSString *broker in self.brokers.allKeys) {
+        DDLogVerbose(@"testing broker %@", broker);
+        NSDictionary *parameters = self.brokers[broker];
+        [self connect:parameters];
+        [self testPublishCloseExpected:[@(__FUNCTION__) dataUsingEncoding:NSUTF8StringEncoding]
+                               onTopic:stringWith9c
+                                retain:TRUE
                                atLevel:MQTTQosLevelAtMostOnce];
         [self shutdown:parameters];
     }