diff --git a/ui/opensnitch/dialogs/prompt/__init__.py b/ui/opensnitch/dialogs/prompt/__init__.py
index eb4325d8..e11ceb9b 100644
--- a/ui/opensnitch/dialogs/prompt/__init__.py
+++ b/ui/opensnitch/dialogs/prompt/__init__.py
@@ -419,10 +419,7 @@ class PromptDialog(QtWidgets.QDialog, uic.loadUiType(DIALOG_UI_PATH)[0]):
         self._default_action = self._cfg.getInt(self._cfg.DEFAULT_ACTION_KEY)
         _utils.set_default_duration(self._cfg, self.durationCombo)
 
-        if int(con.process_id) > 0 and app_name != "" and app_args != "":
-            self.whatCombo.setCurrentIndex(int(self._cfg.getSettings(self._cfg.DEFAULT_TARGET_KEY)))
-        else:
-            self.whatCombo.setCurrentIndex(2)
+        _utils.set_default_target(self.whatCombo, con, self._cfg, app_name, app_args)
 
         self.checkDstIP.setChecked(self._cfg.getBool(self._cfg.DEFAULT_POPUP_ADVANCED_DSTIP))
         self.checkDstPort.setChecked(self._cfg.getBool(self._cfg.DEFAULT_POPUP_ADVANCED_DSTPORT))
diff --git a/ui/opensnitch/dialogs/prompt/_utils.py b/ui/opensnitch/dialogs/prompt/_utils.py
index 8db31c1b..972f0e90 100644
--- a/ui/opensnitch/dialogs/prompt/_utils.py
+++ b/ui/opensnitch/dialogs/prompt/_utils.py
@@ -119,6 +119,20 @@ def set_default_duration(cfg, durationCombo):
     else:
         durationCombo.setCurrentIndex(Config.DEFAULT_DURATION_IDX)
 
+def set_default_target(combo, con, cfg, app_name, app_args):
+    # set appimage as default target if the process path starts with
+    # /tmp/._mount
+    if con.process_path.startswith(_constants.APPIMAGE_PREFIX):
+        idx = combo.findData(_constants.FIELD_APPIMAGE)
+        if idx != -1:
+            combo.setCurrentIndex(idx)
+            return
+
+    if int(con.process_id) > 0 and app_name != "" and app_args != "":
+        combo.setCurrentIndex(int(cfg.getSettings(cfg.DEFAULT_TARGET_KEY)))
+    else:
+        combo.setCurrentIndex(2)
+
 def get_combo_operator(data, comboText, con):
     if data == _constants.FIELD_PROC_PATH:
         return Config.RULE_TYPE_SIMPLE, Config.OPERAND_PROCESS_PATH, con.process_path