diff --git a/src/MainWindow.vala b/src/MainWindow.vala
index e7697736..fd1c4297 100644
--- a/src/MainWindow.vala
+++ b/src/MainWindow.vala
@@ -6,8 +6,6 @@
 public class Monitor.MainWindow : Hdy.ApplicationWindow {
     public ProcessView process_view { get; private set; }
 
-    private Gtk.SearchEntry search_entry;
-
     public MainWindow (MonitorApp app) {
         Object (application: app);
     }
@@ -46,7 +44,7 @@ public class Monitor.MainWindow : Hdy.ApplicationWindow {
             tooltip_text = (_("Settings"))
         };
 
-        search_entry = new Gtk.SearchEntry () {
+        var search_entry = new Gtk.SearchEntry () {
             placeholder_text = _("Search process name or PID"),
             valign = CENTER
         };
@@ -132,20 +130,13 @@ public class Monitor.MainWindow : Hdy.ApplicationWindow {
         dbusserver.indicator_state (MonitorApp.settings.get_boolean ("indicator-state"));
         stack.visible_child_name = MonitorApp.settings.get_string ("opened-view");
 
-        var filter_model = new Gtk.TreeModelFilter (process_view.treeview_model, null);
-        filter_model.set_visible_func (filter_func);
-
-        var sort_model = new Gtk.TreeModelSort.with_model (filter_model);
-
-        process_view.process_tree_view.set_model (sort_model);
-
         search_entry.search_changed.connect (() => {
             // collapse tree only when search is focused and changed
             if (search_entry.is_focus) {
                 process_view.process_tree_view.collapse_all ();
             }
 
-            filter_model.refilter ();
+            process_view.needle = search_entry.text;
 
             // focus on child row to avoid the app crashes by clicking "Kill/End Process" buttons in headerbar
             process_view.process_tree_view.focus_on_child_row ();
@@ -178,47 +169,4 @@ public class Monitor.MainWindow : Hdy.ApplicationWindow {
             this.maximize ();
         }
     }
-
-    private bool filter_func (Gtk.TreeModel model, Gtk.TreeIter iter) {
-        string name_haystack;
-        int pid_haystack;
-        string cmd_haystack;
-        bool found = false;
-        var needle = search_entry.text;
-
-        // should help with assertion errors, donno
-        // if (needle == null) return true;
-
-        if (needle.length == 0) {
-            return true;
-        }
-
-        model.get (iter, Column.NAME, out name_haystack, -1);
-        model.get (iter, Column.PID, out pid_haystack, -1);
-        model.get (iter, Column.CMD, out cmd_haystack, -1);
-
-        // sometimes name_haystack is null
-        if (name_haystack != null) {
-            bool name_found = name_haystack.casefold ().contains (needle.casefold ()) || false;
-            bool pid_found = pid_haystack.to_string ().casefold ().contains (needle.casefold ()) || false;
-            bool cmd_found = cmd_haystack.casefold ().contains (needle.casefold ()) || false;
-            found = name_found || pid_found || cmd_found;
-        }
-
-
-        Gtk.TreeIter child_iter;
-        bool child_found = false;
-
-        if (model.iter_children (out child_iter, iter)) {
-            do {
-                child_found = filter_func (model, child_iter);
-            } while (model.iter_next (ref child_iter) && !child_found);
-        }
-
-        if (child_found && needle.length > 0) {
-            process_view.process_tree_view.expand_all ();
-        }
-
-        return found || child_found;
-    }
 }
diff --git a/src/Views/ProcessView/ProcessView.vala b/src/Views/ProcessView/ProcessView.vala
index e93fa1bd..5ddf4ad9 100644
--- a/src/Views/ProcessView/ProcessView.vala
+++ b/src/Views/ProcessView/ProcessView.vala
@@ -4,16 +4,24 @@
  */
 
 public class Monitor.ProcessView : Gtk.Box {
-    public TreeViewModel treeview_model { get; private set; }
+    public string needle = "";
+
     public CPUProcessTreeView process_tree_view { get; private set; }
 
     private ProcessInfoView process_info_view;
+    private TreeViewModel treeview_model;
 
     construct {
         treeview_model = new TreeViewModel ();
 
+        var filter_model = new Gtk.TreeModelFilter (treeview_model, null);
+        filter_model.set_visible_func (filter_func);
+
+        var sort_model = new Gtk.TreeModelSort.with_model (filter_model);
+
         process_tree_view = new CPUProcessTreeView (treeview_model);
         process_tree_view.process_selected.connect ((process) => on_process_selected (process));
+        process_tree_view.set_model (sort_model);
 
         var process_tree_view_scrolled = new Gtk.ScrolledWindow (null, null) {
             child = process_tree_view
@@ -32,6 +40,8 @@ public class Monitor.ProcessView : Gtk.Box {
         paned.pack2 (process_info_view, false, false);
 
         add (paned);
+
+        notify["needle"].connect (filter_model.refilter);
     }
 
     public void on_process_selected (Process process) {
@@ -51,4 +61,42 @@ public class Monitor.ProcessView : Gtk.Box {
         });
 
     }
+
+    private bool filter_func (Gtk.TreeModel model, Gtk.TreeIter iter) {
+        string name_haystack;
+        int pid_haystack;
+        string cmd_haystack;
+        bool found = false;
+
+        if (needle.length == 0) {
+            return true;
+        }
+
+        model.get (iter, Column.NAME, out name_haystack, -1);
+        model.get (iter, Column.PID, out pid_haystack, -1);
+        model.get (iter, Column.CMD, out cmd_haystack, -1);
+
+        // sometimes name_haystack is null
+        if (name_haystack != null) {
+            bool name_found = name_haystack.casefold ().contains (needle.casefold ()) || false;
+            bool pid_found = pid_haystack.to_string ().casefold ().contains (needle.casefold ()) || false;
+            bool cmd_found = cmd_haystack.casefold ().contains (needle.casefold ()) || false;
+            found = name_found || pid_found || cmd_found;
+        }
+
+        Gtk.TreeIter child_iter;
+        bool child_found = false;
+
+        if (model.iter_children (out child_iter, iter)) {
+            do {
+                child_found = filter_func (model, child_iter);
+            } while (model.iter_next (ref child_iter) && !child_found);
+        }
+
+        if (child_found && needle.length > 0) {
+            process_tree_view.expand_all ();
+        }
+
+        return found || child_found;
+    }
 }