diff --git a/readme.md b/readme.md
index d7e374a..6bf7691 100644
--- a/readme.md
+++ b/readme.md
@@ -9,14 +9,31 @@
 # Time Algorithm
 
 ```plantuml
-@startuml 
-(*) --> "relTime = 0" as rt0
-rt0 --> if goForward then
--left--> [false] "insert"
-else
--right--> [true] "do Stuff"
+
+@startuml
+
+start
+:rTime = 0
+relInterval = 0
+isEnd = it == list.end();
+if (!isEnd) then (not end)
+ :relInterval = it.getRelTicks()
+ rTime += relInterval;
+
+    while ( !isEnd && ( relInterval <= 0 || (rTime < dTime) ) is (goForward)
+    :isEnd = (++it == list.end());
+        if (!isEnd) then (not end)
+            :relInterval = it.getRelTicks()
+            rTime += relInterval;
+        endif
+    endwhile
+    
+endif
+: insert ;
+
 @enduml
 
+
 ```
 
 
diff --git a/src/simplified/xf/port/common/timeoutmanager.cpp b/src/simplified/xf/port/common/timeoutmanager.cpp
index 0356cc7..f5ec382 100644
--- a/src/simplified/xf/port/common/timeoutmanager.cpp
+++ b/src/simplified/xf/port/common/timeoutmanager.cpp
@@ -34,67 +34,35 @@ XFTimeoutManager::~XFTimeoutManager() {
 
 void XFTimeoutManager::addTimeout(XFTimeout *pNewTimeout) {
 
-    const int desireInterval = pNewTimeout->getInterval();
-    int intervalOfTimeout = 0;
-    int ticks;
+    const int dTime = pNewTimeout->getInterval();
+    int rTime = 0;
+    int relInterval = 0;
+    bool isEnd = true;
+    int interval = dTime;
 
     this->pMutex_->lock();
-
-    if(this->timeouts_.empty()) {
-        ticks = (desireInterval-intervalOfTimeout);
-        if(ticks<=0) ticks = 0;
-        pNewTimeout->setRelTicks(ticks);
-        this->timeouts_.push_back(pNewTimeout);
-        this->pMutex_->unlock();
-        return;
-    }
-
     TimeoutList::iterator it = this->timeouts_.begin();
-    while(intervalOfTimeout < desireInterval) {
-        if(++it == this->timeouts_.end()){
-            ticks = (desireInterval-intervalOfTimeout);
-            if(ticks<=0) ticks = 0;
-            pNewTimeout->setRelTicks(ticks);
-            this->timeouts_.push_back(pNewTimeout);
-            this->pMutex_->unlock();
-            return;
-        } else {
-            intervalOfTimeout += (*it)->getRelTicks();
-        }
+    isEnd = (it == this->timeouts_.end());
+
+    if(!isEnd){
+        relInterval = (*it)->getInterval();
+        rTime += relInterval;
     }
 
-    if(intervalOfTimeout == desireInterval) {
-        if(++it == this->timeouts_.end()) {
-            ticks = (desireInterval-intervalOfTimeout);
-            if(ticks<=0) ticks = 0;
-            pNewTimeout->setRelTicks(ticks);
-            this->timeouts_.push_back(pNewTimeout);
-            this->pMutex_->unlock();
-            return;
-        } else {
-
-            while((*it)->getRelTicks() == 0) {
-                if(++it == this->timeouts_.end()) {
-                    ticks = (desireInterval-intervalOfTimeout);
-                    if(ticks<=0) ticks = 0;
-                    pNewTimeout->setRelTicks(ticks);
-                    this->timeouts_.push_back(pNewTimeout);
-                    this->pMutex_->unlock();
-                    return;
-                }
-                it++;
-            }
-
+    while(!isEnd && ( relInterval <= 0 || (rTime > dTime) )) {
+        isEnd = (++it == this->timeouts_.end());
+        interval = rTime - dTime;
+        if(!isEnd) {
+            relInterval = (*it)->getRelTicks();
+            rTime += relInterval;
         }
     }
+    if(it == this->timeouts_.begin())
 
-    // TODO change for take care of 10ms ecart of timeout
-    ticks = (desireInterval-intervalOfTimeout);
-    ticks = ticks > 0 ? ticks/this->tickInterval_ : 0;
-
-    (*it)->substractFromRelTicks(ticks);
-    pNewTimeout->setRelTicks(ticks);
-    this->timeouts_.insert(--it, pNewTimeout);
+    if(!isEnd) (*it)->substractFromRelTicks(interval);
+    it--;
+    pNewTimeout->setRelTicks(interval);
+    this->timeouts_.insert(it, pNewTimeout);
     this->pMutex_->unlock();
     return;
 
@@ -131,18 +99,25 @@ void XFTimeoutManager::unscheduleTimeout(int32_t timeoutId, interface::XFBehavio
 
 void XFTimeoutManager::tick() {
 
-    if(!this->timeouts_.empty()) {
+    bool isEmpty = this->timeouts_.empty();
+    int rTime;
+
+    if(!isEmpty) {
 
         this->pMutex_->lock();
 
         XFTimeout* timeout = this->timeouts_.front();
         timeout->substractFromRelTicks(tickInterval_);
+        rTime = timeout->getRelTicks();
 
-        while (timeout->getRelTicks() <= 0 ) {
+        while (!isEmpty && (rTime <= 0) ) {
+
+            rTime = timeout->getRelTicks();
 
             XFDispatcher::getInstance()->pushEvent(timeout);
             this->timeouts_.pop_front();
             timeout = this->timeouts_.front();
+            isEmpty = this->timeouts_.empty();
 
         }