diff --git a/src/getavailablethemes.py b/src/getavailablethemes.py
index 0504062..f3ba9eb 100644
--- a/src/getavailablethemes.py
+++ b/src/getavailablethemes.py
@@ -15,6 +15,7 @@
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 import os
+from pathlib import Path
 from gi.repository import Gtk, GLib, GdkPixbuf
 
 from .pixbuffromxcursor import pixbufFromXCursor
@@ -38,8 +39,7 @@ def getAvailableGtk3Themes():
     lookupPaths = [
         os.path.join(GLib.get_user_data_dir(), "themes"),
         os.path.join(GLib.get_home_dir(), ".themes"),
-        "/usr/share/themes"
-    ]
+    ] + [os.path.join(dataDir, "themes") for dataDir in GLib.get_system_data_dirs()]
     for lookupPath in lookupPaths:
         try:
             for f in os.listdir(lookupPath):
@@ -63,8 +63,7 @@ def getAvailableIconThemes():
     lookupPaths = [
         os.path.join(GLib.get_user_data_dir(), "icons"),
         os.path.join(GLib.get_home_dir(), ".icons"),
-        "/usr/share/icons"
-    ]
+    ] + [os.path.join(dataDir, "icons") for dataDir in GLib.get_system_data_dirs()]
     for lookupPath in lookupPaths:
         try:
             for f in os.listdir(lookupPath):
@@ -102,8 +101,7 @@ def getAvailableCursorThemes():
     lookupPaths = [
         os.path.join(GLib.get_user_data_dir(), "icons"),
         os.path.join(GLib.get_home_dir(), ".icons"),
-        "/usr/share/icons"
-    ]
+    ] + [os.path.join(dataDir, "icons") for dataDir in GLib.get_system_data_dirs()]
     for lookupPath in lookupPaths:
         try:
             for f in os.listdir(lookupPath):
@@ -135,8 +133,7 @@ def getAvailableGtk4Themes():
     lookupPaths = [
         os.path.join(GLib.get_user_data_dir(), "themes"),
         os.path.join(GLib.get_home_dir(), ".themes"),
-        "/usr/share/themes"
-    ]
+    ] + [os.path.join(dataDir, "themes") for dataDir in GLib.get_system_data_dirs()]
     for lookupPath in lookupPaths:
         try:
             for f in os.listdir(lookupPath):
@@ -152,8 +149,7 @@ def getAvailableGtk2Themes():
     lookupPaths = [
         os.path.join(GLib.get_user_data_dir(), "themes"),
         os.path.join(GLib.get_home_dir(), ".themes"),
-        "/usr/share/themes"
-    ]
+    ] + [os.path.join(dataDir, "themes") for dataDir in GLib.get_system_data_dirs()]
     for lookupPath in lookupPaths:
         try:
             for f in os.listdir(lookupPath):
@@ -163,13 +159,13 @@ def getAvailableGtk2Themes():
             pass
     return uniquifySortedListStore(availableThemes)
 
-def getAvailableKvantumThemes():
+def getAvailableKvantumThemes(kvantumPath):
     availableThemes = Gtk.ListStore(str, str)
     availableThemes.set_sort_column_id(0, Gtk.SortType.ASCENDING)
     availableThemes.append(["Kvantum", "default"])
     lookupPaths = [
         os.path.join(GLib.get_user_config_dir(), "Kvantum"),
-        "/usr/share/Kvantum"
+        os.path.join(Path(kvantumPath).parent.parent, "share", "Kvantum")
     ]
     for lookupPath in lookupPaths:
         try:
@@ -180,4 +176,4 @@ def getAvailableKvantumThemes():
                         availableThemes.append([f+"Dark", f+"Dark"])
         except:
             pass
-    return uniquifySortedListStore(availableThemes)
\ No newline at end of file
+    return uniquifySortedListStore(availableThemes)
diff --git a/src/meson.build b/src/meson.build
index 3bb98b4..8d5dc46 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -18,7 +18,7 @@ conf.set('localedir', join_paths(get_option('prefix'), get_option('localedir')))
 conf.set('pkgdatadir', pkgdatadir)
 conf.set('gtkversion', '3.0')
 
-pythondep = python.dependency(version: '>= 3.5')
+pythondep = python.dependency(version: '>= 3.6')
 pygobjectdep = dependency('pygobject-3.0')
 xcursordep = dependency('xcursor')
 gdkpixbufdep = dependency('gdk-pixbuf-2.0')
diff --git a/src/window.py b/src/window.py
index 5fd971c..04dc3d8 100644
--- a/src/window.py
+++ b/src/window.py
@@ -177,7 +177,8 @@ def __init__(self, app):
         self.anotherGtk4ThemeSwitch.set_active(hasAnotherGtk4Theme)
         self.gtk4SearchableThemeList.set_visible(hasAnotherGtk4Theme)
 
-        if shutil.which("kvantummanager"):
+        kvantumPath = shutil.which("kvantummanager")
+        if kvantumPath:
             try:
                 kvantumKeyFile = GLib.KeyFile()
                 kvantumKeyFile.load_from_file(os.path.join(GLib.get_user_config_dir(), "Kvantum", "kvantum.kvconfig"), GLib.KeyFileFlags.NONE)
@@ -186,7 +187,7 @@ def __init__(self, app):
                 self.kvantumThemeName = self.gtkProps.gtk_theme_name
             hasAnotherKvantumTheme = self.gtkProps.gtk_theme_name != self.kvantumThemeName
             self.kvantumSearchableThemeList = SearchableThemeList(
-                getAvailableKvantumThemes(),
+                getAvailableKvantumThemes(kvantumPath),
                 self.kvantumThemeName,
                 self.onKvantumThemeChanged
             )