diff --git a/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro b/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro
index 0509002..dc9b222 100644
--- a/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro
+++ b/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro
@@ -149,7 +149,8 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # 1.5.6   : Show additional update progress info in status bar.
 # 1.5.7   : Add support for dynamic portrait / landscape.
 # 1.5.8   : Use EVENT_ID=<pid of update-tool> for CMD_EVENT.
-VERSION="1.5.8"
+# 1.5.9   : Removed restart of Apism if ISMAS unreachable.
+VERSION="1.5.9"
 # PLANNED TODOS:
 #   1:  Das Repository wird repariert bwz. neu geklont. Unabhaengig vom WAIT.
 #   2:  Wenn der WAIT-Button aktiv ist, dann wird ein Repository repariert (neu
diff --git a/UpdatePTUDevCtrl/worker.cpp b/UpdatePTUDevCtrl/worker.cpp
index 603debd..8c1a12a 100644
--- a/UpdatePTUDevCtrl/worker.cpp
+++ b/UpdatePTUDevCtrl/worker.cpp
@@ -584,16 +584,6 @@ bool Worker::updateTriggerSet() {
             CONSOLE(lst) << UPDATE_STEP::DEBUG;
         }
 
-        if ((repeat % 8) == 0) {
-            CONSOLE(QStringList(func) << "RESTART APISM") << UPDATE_STEP::DEBUG;
-            Command c("systemctl restart apism");
-            if (c.execute("/tmp")) {
-                QThread::sleep(20); // give APISM some time to reconnect
-                QStringList lst = (m_ismasTriggerStatusMessage = (QStringList(func) << "RESTART APISM DONE"));
-                CONSOLE(lst) << UPDATE_STEP::DEBUG;
-            }
-        }
-
         if (std::optional<QString> result
                 = IsmasClient::sendRequestReceiveResponse(
                     IsmasClient::APISM::DIRECT_PORT, "#M=APISM#C=REQ_ISMASPARAMETER#J={}")) {