diff --git a/nixview/central_widget.py b/nixview/central_widget.py
index ba947c5..23fab8d 100644
--- a/nixview/central_widget.py
+++ b/nixview/central_widget.py
@@ -196,7 +196,7 @@ class SplashScreen(QWidget):
         self.setLayout(layout)
         
         label = QLabel()
-        label.setPixmap(QPixmap("./icons/nixview_transparent.png"))
+        label.setPixmap(QPixmap(os.path.join(cnst.ICONS_FOLDER, "nixview_transparent.png")))
         label.setMaximumWidth(300)
         label.setAlignment(Qt.AlignCenter)
         layout.addWidget(label, 1, 1, 1, 3, Qt.AlignCenter)
diff --git a/nixview/main_window.py b/nixview/main_window.py
index 2b06c5c..2633405 100644
--- a/nixview/main_window.py
+++ b/nixview/main_window.py
@@ -1,3 +1,4 @@
+import os
 import sys
 from PyQt5.QtWidgets import QWidget, QFileDialog, QMainWindow, QMenuBar, QToolBar, QAction, QStatusBar, QSizePolicy
 from PyQt5.QtGui import QIcon, QKeySequence
@@ -15,7 +16,7 @@ class NixView(QMainWindow):
         super(NixView, self).__init__(*args, **kwargs)
         self._current_item = None
         self.setWindowTitle("NixView")
-        self.setWindowIcon(QIcon('./icons/nixview.icns'))
+        self.setWindowIcon(QIcon(os.path.join(cnst.ICONS_FOLDER, 'nixview.icns')))
 
         self._file_handler = FileHandler()
         self.setStatusBar(QStatusBar(self))
@@ -40,29 +41,29 @@ class NixView(QMainWindow):
         self._table_action.setEnabled(enable)
         
     def create_actions(self):
-        self._file_open_action = QAction(QIcon("./icons/nix_open.png"), "Open", self)
+        self._file_open_action = QAction(QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_open.png")), "Open", self)
         self._file_open_action.setStatusTip("Open nix file")
         self._file_open_action.setShortcut(QKeySequence("Ctrl+o"))
         self._file_open_action.triggered.connect(self.on_file_open)
         
-        self._file_close_action = QAction(QIcon("./icons/nix_close.png"), "Close", self)
+        self._file_close_action = QAction(QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_close.png")), "Close", self)
         self._file_close_action.setStatusTip("Close current nix file")
         self._file_close_action.setShortcut(QKeySequence("Ctrl+w"))
         self._file_close_action.setEnabled(False)
         self._file_close_action.triggered.connect(self.on_file_close)
         
-        self._quit_action = QAction(QIcon("./icons/quit.png"), "Quit", self)
+        self._quit_action = QAction(QIcon(os.path.join(cnst.ICONS_FOLDER, "quit.png")), "Quit", self)
         self._quit_action.setStatusTip("Close current file and quit")
         self._quit_action.setShortcut(QKeySequence("Ctrl+q"))
         self._quit_action.triggered.connect(self.on_quit)
         
-        self._plot_action = QAction(QIcon("./icons/nix_plot.png"), "Plot", self)
+        self._plot_action = QAction(QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_plot.png")), "Plot", self)
         self._plot_action.setStatusTip("Plot currently selected entity")
         self._plot_action.setShortcut(QKeySequence("Ctrl+p"))
         self._plot_action.setEnabled(False)
         self._plot_action.triggered.connect(self.on_item_plot)
         
-        self._table_action = QAction(QIcon("./icons/nix_table.png"), "Show table", self)
+        self._table_action = QAction(QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_table.png")), "Show table", self)
         self._table_action.setStatusTip("Show data as table")
         self._table_action.setShortcut(QKeySequence("Ctrl+t"))
         self._table_action.setEnabled(False)
diff --git a/nixview/tree_model.py b/nixview/tree_model.py
index c48be8c..540e351 100644
--- a/nixview/tree_model.py
+++ b/nixview/tree_model.py
@@ -1,3 +1,5 @@
+import os
+import nixview.constants as cnst
 from PyQt5.QtCore import QAbstractItemModel, QModelIndex, Qt, QSize
 from PyQt5.QtGui import QIcon
 from PyQt5.QtWidgets import QTreeView, QTreeWidgetItem, QAbstractItemView, QHeaderView
@@ -261,17 +263,17 @@ class TreeModel(QAbstractItemModel):
     def __init__(self, file_handler, tree_type=TreeType.Full, parent=None, root_section_id=None):
         super(TreeModel, self).__init__(parent)
         nd = ItemDescriptor(file_handler.filename, type="Root item")
-        self.type_icons = {NodeType.Block: QIcon("./icons/nix_block_1d.png"),
-                           NodeType.Source: QIcon("./icons/nix_source.png"),
-                           NodeType.DataArray: QIcon("./icons/nix_data_array.png"),
-                           NodeType.Dimension: QIcon("./icons/nix_dimension.png"),
-                           NodeType.DataFrame: QIcon("./icons/nix_data_frame.png"),
-                           NodeType.Section: QIcon("./icons/nix_section.png"),
-                           NodeType.Property: QIcon("./icons/nix_property.png"),
-                           NodeType.Tag: QIcon("./icons/nix_tag.png"),
-                           NodeType.MultiTag: QIcon("./icons/nix_tag.png"),
-                           NodeType.Group: QIcon("./icons/nix_group.png"),
-                           NodeType.Feature: QIcon("./icons/nix_feature.png")}
+        self.type_icons = {NodeType.Block: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_block_1d.png")),
+                           NodeType.Source: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_source.png")),
+                           NodeType.DataArray: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_data_array.png")),
+                           NodeType.Dimension: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_dimension.png")),
+                           NodeType.DataFrame: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_data_frame.png")),
+                           NodeType.Section: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_section.png")),
+                           NodeType.Property: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_property.png")),
+                           NodeType.Tag: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_tag.png")),
+                           NodeType.MultiTag: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_tag.png")),
+                           NodeType.Group: QIcon(os.path.join(cnst.ICONS_FOLDER, "icons/nix_group.png")),
+                           NodeType.Feature: QIcon(os.path.join(cnst.ICONS_FOLDER, "nix_feature.png"))}
 
         if tree_type == TreeType.Full:
             self.root_item = FileTreeItem(nd, file_handler, parent=None)