diff --git a/build.sh b/build.sh
index 17dd916..ebc23dd 100755
--- a/build.sh
+++ b/build.sh
@@ -61,4 +61,9 @@ if [[ " ${PARAMS[*]} " =~ " -r " ]]; then
     glib-compile-schemas schemas/;
     copy;
     restart;
+fi
+
+if [[ " ${PARAMS[*]} " =~ " -c " ]]; then
+    glib-compile-schemas schemas/;
+    copy;
 fi
\ No newline at end of file
diff --git a/metadata.json b/metadata.json
index 405a872..3bcea2e 100644
--- a/metadata.json
+++ b/metadata.json
@@ -10,5 +10,5 @@
   ],
   "url": "https://github.com/cliffniff/media-controls",
   "uuid": "mediacontrols@cliffniff.github.com",
-  "version": 27
+  "version": 29
 }
diff --git a/prefs.js b/prefs.js
index 70caf27..e39ea08 100644
--- a/prefs.js
+++ b/prefs.js
@@ -8,7 +8,9 @@ const Me = ExtensionUtils.getCurrentExtension();
 const Gettext = imports.gettext.domain("mediacontrols");
 const _ = Gettext.gettext;
 
-const { execCommunicate } = Me.imports.utils;
+Gio._promisify(Gio.File.prototype, "query_info_async");
+Gio._promisify(Gio.File.prototype, "enumerate_children_async");
+Gio._promisify(Gio.File.prototype, "delete_async");
 
 function init() {
     ExtensionUtils.initTranslations("mediacontrols");
@@ -798,10 +800,7 @@ class AdwPrefs {
         adwrow.add_suffix(blacklistentry);
         adwrow.activatable_widget = blacklistentry;
         group2.add(adwrow);
-        const blacklistbuttonadd = Gtk.Button.new_from_icon_name(
-            "list-add-symbolic",
-            Gtk.IconSize.BUTTON || Gtk.IconSize.NORMAL
-        );
+        const blacklistbuttonadd = Gtk.Button.new_from_icon_name("list-add-symbolic");
         blacklistbuttonadd.set_valign(Gtk.Align.CENTER);
         adwrow.add_suffix(blacklistbuttonadd);
         adwrow.activatable_widget = blacklistbuttonadd;
@@ -846,29 +845,70 @@ class AdwPrefs {
     }
 
     async _getCacheSize() {
-        // Command: du -hs [data_directory]/media-controls | awk '{NF=1}1'
         try {
-            let dir = GLib.get_user_config_dir() + "/media-controls";
-            const result = await execCommunicate(["/bin/bash", "-c", `du -hs ${dir} | awk '{NF=1}1'`]);
-            return result || "0K";
+            const path = GLib.get_user_config_dir() + "/media-controls/cache";
+            const directory = Gio.File.new_for_path(path);
+            const iterator = await directory.enumerate_children_async(
+                "standard::*",
+                Gio.FileQueryInfoFlags.NOFOLLOW_SYMLINKS,
+                GLib.PRIORITY_DEFAULT,
+                null
+            );
+
+            let sizeInBytes = 0;
+
+            for await (const fileInfo of iterator) {
+                const fileType = fileInfo.get_file_type();
+                if (fileType === Gio.FileType.REGULAR) {
+                    const fileSize = fileInfo.get_size();
+                    sizeInBytes += fileSize;
+                }
+            }
+
+            return this._bytesToSize(sizeInBytes);
         } catch (error) {
             logError(error);
         }
     }
 
     async _clearcache(widgetCacheSize, clearcachespinner) {
-        let dir = GLib.get_user_config_dir() + "/media-controls";
         try {
             clearcachespinner.start();
-            await execCommunicate(["rm", "-r", dir]);
+
+            const path = GLib.get_user_config_dir() + "/media-controls/cache";
+            const directory = Gio.File.new_for_path(path);
+            const iterator = await directory.enumerate_children_async(
+                "standard::*",
+                Gio.FileQueryInfoFlags.NOFOLLOW_SYMLINKS,
+                GLib.PRIORITY_DEFAULT,
+                null
+            );
+
+            const promises = [];
+
+            for await (const fileInfo of iterator) {
+                const file = iterator.get_child(fileInfo);
+                promises.push(file.delete_async(GLib.PRIORITY_DEFAULT, null));
+            }
+
+            await Promise.all(promises);
+
             widgetCacheSize.set_text(await this._getCacheSize());
             clearcachespinner.stop();
         } catch (error) {
+            logError(error);
             widgetCacheSize.set_text(_("Failed to clear cache"));
             clearcachespinner.stop();
         }
     }
 
+    _bytesToSize(bytes) {
+        const sizes = ["Bytes", "KB", "MB", "GB", "TB"];
+        if (bytes === 0) return "0 Bytes";
+        const i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
+        return Math.round(bytes / Math.pow(1024, i)) + " " + sizes[i];
+    }
+
     _onclearcacheclicked(widgetCacheSize, clearcachespinner) {
         this._clearcache(widgetCacheSize, clearcachespinner);
     }
diff --git a/utils.js b/utils.js
index 7cd4080..2cf7cb9 100644
--- a/utils.js
+++ b/utils.js
@@ -108,51 +108,3 @@ var getRequest = (url) => {
         });
     });
 };
-
-/**
- * Executes a shell command asynchronously
- * @param {Array<string>} argv  array of arguments
- * @param {string?} input input to be given to the shell command
- * @param {boolean?} cancellable whether the operation is cancellable
- * @returns
- */
-var execCommunicate = async (argv, input = null, cancellable = null) => {
-    let cancelId = 0;
-    let flags = Gio.SubprocessFlags.STDOUT_PIPE | Gio.SubprocessFlags.STDERR_PIPE;
-
-    if (input !== null) flags |= Gio.SubprocessFlags.STDIN_PIPE;
-
-    let proc = new Gio.Subprocess({
-        argv: argv,
-        flags: flags,
-    });
-    proc.init(cancellable);
-
-    if (cancellable instanceof Gio.Cancellable) {
-        cancelId = cancellable.connect(() => proc.force_exit());
-    }
-
-    return new Promise((resolve, reject) => {
-        proc.communicate_utf8_async(input, null, (proc, res) => {
-            try {
-                let [, stdout, stderr] = proc.communicate_utf8_finish(res);
-                let status = proc.get_exit_status();
-
-                if (status !== 0) {
-                    throw new Gio.IOErrorEnum({
-                        code: Gio.io_error_from_errno(status),
-                        message: stderr ? stderr.trim() : GLib.strerror(status),
-                    });
-                }
-
-                resolve(stdout.trim());
-            } catch (e) {
-                reject(e);
-            } finally {
-                if (cancelId > 0) {
-                    cancellable.disconnect(cancelId);
-                }
-            }
-        });
-    });
-};