diff --git a/dataeditor.py b/dataeditor.py
index 61d4247c..01f582e6 100644
--- a/dataeditor.py
+++ b/dataeditor.py
@@ -1088,12 +1088,18 @@ def remove_selected(self):
             for rcvname, rcvdi in request.dataitems.items():
                 if rcvname == dataname:
                     msgbox = widgets.QMessageBox()
+                    appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+                    msgbox.setWindowIcon(appIcon)
+                    msgbox.setWindowTitle("DTT4ALL")
                     msgbox.setText(_("Data is used by request %s") % reqname)
                     msgbox.exec_()
                     return
             for sndname, snddi in request.sendbyte_dataitems.items():
                 if sndname == dataname:
                     msgbox = widgets.QMessageBox()
+                    appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+                    msgbox.setWindowIcon(appIcon)
+                    msgbox.setWindowTitle("DTT4ALL")
                     msgbox.setText(_("Data is used by request %s") % reqname)
                     msgbox.exec_()
                     return
diff --git a/main.py b/main.py
index 6b707e69..d55893bb 100644
--- a/main.py
+++ b/main.py
@@ -285,6 +285,7 @@ def __init__(self, parent=None):
             msgbox = widgets.QMessageBox()
             appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
             msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setIcon(widgets.QMessageBox.Warning)
             msgbox.setText(_("No database found"))
             msgbox.setInformativeText(_("Check documentation"))
@@ -679,6 +680,7 @@ def zipdb(self):
             mbox = widgets.QMessageBox()
             appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
             mbox.setWindowIcon(appIcon)
+            mbox.setWindowTitle("DTT4ALL")
             mbox.setText("Cannot write to directory " + os.path.dirname(filename))
             mbox.exec_()
             return
@@ -804,6 +806,7 @@ def scan(self):
         msgBox = widgets.QMessageBox()
         appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
         msgBox.setWindowIcon(appIcon)
+        msgBox.setWindowTitle("DTT4ALL")
         msgBox.setText(_('Scan options'))
         scancan = False
         scancan2 = False
@@ -1124,6 +1127,7 @@ def mousePressEvent(self, mousevent):
         msgbox = widgets.QMessageBox()
         appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
         msgbox.setWindowIcon(appIcon)
+        msgbox.setWindowTitle("DTT4ALL")
         msgbox.setText(
             _("<center>This Software is free, but I need money to buy cables/ECUs and make this application more reliable</center>"))
         okbutton = widgets.QPushButton(_('Yes I contribute'))
@@ -1138,6 +1142,7 @@ def donate(self):
             core.QUrl.TolerantMode)
         gui.QDesktopServices().openUrl(url)
         msgbox = widgets.QMessageBox()
+        msgbox.setWindowTitle("DTT4ALL")
         appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
         msgbox.setWindowIcon(appIcon)
         msgbox.setText(
@@ -1506,6 +1511,7 @@ def connectedMode(self):
             msgbox = widgets.QMessageBox()
             appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
             msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText(_("You must check the recommandations"))
             msgbox.exec_()
             return
@@ -1527,6 +1533,7 @@ def connectedMode(self):
                 msgbox = widgets.QMessageBox()
                 appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
                 msgbox.setWindowIcon(appIcon)
+                msgbox.setWindowTitle("DTT4ALL")
                 msgbox.setText(_("Please select a communication port"))
                 msgbox.exec_()
 
@@ -1598,6 +1605,7 @@ def demoMode(self):
             msgbox = widgets.QMessageBox()
             appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
             msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText(_("No COM port selected"))
             msgbox.exec_()
 
@@ -1609,6 +1617,7 @@ def demoMode(self):
             msgbox = widgets.QMessageBox()
             appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
             msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText(_("No ELM327 or OBDLINK-SX detected on COM port ") + options.port)
             msgbox.exec_()
         else:
diff --git a/parameters.py b/parameters.py
index cc6f5ac2..2fd9ff5c 100644
--- a/parameters.py
+++ b/parameters.py
@@ -89,6 +89,9 @@ def __init__(self, paramview, ecurequestparser, sds):
         text += "<center>Use it at your own risk</center>\n"
         text += "<center>and if you know exactely what you do</center>\n"
         msgbox = widgets.QMessageBox()
+        appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+        msgbox.setWindowIcon(appIcon)
+        msgbox.setWindowTitle("DTT4ALL")
         msgbox.setText(text)
         msgbox.exec_()
 
@@ -108,6 +111,9 @@ def compute_frame(self, check=True):
             else:
                 if check:
                     msgbox = widgets.QMessageBox()
+                    appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+                    msgbox.setWindowIcon(appIcon)
+                    msgbox.setWindowTitle("DTT4ALL")
                     msgbox.setText("Missing data in table")
                     msgbox.exec_()
                 return "Missing input data"
@@ -132,6 +138,9 @@ def execute(self):
         reveived_stream = self.paramview.sendElm(stream_to_send, False, True)
         if reveived_stream.startswith("WRONG"):
             msgbox = widgets.QMessageBox()
+            appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+            msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText("ECU returned error (check logview)")
             msgbox.exec_()
             return
@@ -1100,6 +1109,9 @@ def buttonClicked(self, txt):
             messages = self.button_messages[txt]
             for message in messages:
                 msgbox = widgets.QMessageBox()
+                appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+                msgbox.setWindowIcon(appIcon)
+                msgbox.setWindowTitle("DTT4ALL")
                 msgbox.setText(message)
                 msgbox.exec_()
 
@@ -1170,6 +1182,8 @@ def buttonClicked(self, txt):
             elm_response = self.sendElm(' '.join(elm_data_stream))
             if elm_response == "BLOCKED":
                 msgbox = widgets.QMessageBox()
+                appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+                msgbox.setWindowIcon(appIcon)
                 msgbox.setWindowTitle("For your safety")
                 msgbox.setText("<center>BLOCKED COMMAND</center>\nActivate expert mode to unlock")
                 msgbox.exec_()
@@ -1407,6 +1421,9 @@ def clearDTC(self):
             request = "14FF00"
 
         msgbox = widgets.QMessageBox()
+        appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+        msgbox.setWindowIcon(appIcon)
+        msgbox.setWindowTitle("DTT4ALL")
         msgbox.setText(_("<center>You are about to clear diagnostic troubles codes</center>") +
                        _("<center>Ae you sure this is what you want.</center>"))
 
@@ -1434,6 +1451,9 @@ def clearDTC(self):
 
         if 'WRONG' in response:
             msgbox = widgets.QMessageBox()
+            appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+            msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText("There was an error clearing DTC")
             msgbox.exec_()
             options.main_window.logview.append("<font color=red>Clear DTC failed</font>")
@@ -1469,6 +1489,9 @@ def readDTC(self):
 
         if "RESPONSE" in can_response:
             msgbox = widgets.QMessageBox()
+            appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+            msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText(_("Invalid response for ReadDTC command"))
             msgbox.exec_()
             return
@@ -1478,6 +1501,9 @@ def readDTC(self):
         # Handle error
         if can_response[0].upper() == "7F":
             msgbox = widgets.QMessageBox()
+            appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+            msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText(_("Read DTC returned an error"))
             msgbox.exec_()
             return
@@ -1486,6 +1512,9 @@ def readDTC(self):
         if len(can_response) == 2:
             # No errors
             msgbox = widgets.QMessageBox()
+            appIcon = gui.QIcon("dtt4all_data/icons/obd.png")
+            msgbox.setWindowIcon(appIcon)
+            msgbox.setWindowTitle("DTT4ALL")
             msgbox.setText(_("No DTC"))
             msgbox.exec_()
             return