diff --git a/src/modules/wlr/taskbar.cpp b/src/modules/wlr/taskbar.cpp
index 16762357..6dd24a73 100644
--- a/src/modules/wlr/taskbar.cpp
+++ b/src/modules/wlr/taskbar.cpp
@@ -77,6 +77,7 @@ static bool image_load_icon(Gtk::Image& image, Glib::RefPtr<Gtk::IconTheme> icon
         const std::string &app_id_list, int size)
 {
     std::string app_id;
+    std::string lower_app_id;
     std::istringstream stream(app_id_list);
     bool found = false;
 
@@ -85,10 +86,18 @@ static bool image_load_icon(Gtk::Image& image, Glib::RefPtr<Gtk::IconTheme> icon
      * send a single app-id, but in any case this works fine */
     while (stream >> app_id)
     {
+        std::transform(app_id.begin(), app_id.end(), lower_app_id.begin(),
+            [](char c){ return std::tolower(c); });
         std::string icon_name = get_from_icon_theme(icon_theme, app_id);
+        if (icon_name.empty())
+            icon_name = get_from_icon_theme(icon_theme, lower_app_id);
+
         if (icon_name.empty())
             icon_name = get_from_desktop_app_info(app_id);
 
+        if (icon_name.empty())
+            icon_name = get_from_desktop_app_info(lower_app_id);
+
         if (icon_name.empty())
             continue;
 
@@ -271,8 +280,6 @@ void Task::handle_title(const char *title)
 void Task::handle_app_id(const char *app_id)
 {
     app_id_ = app_id;
-    std::transform(app_id_.begin(), app_id_.end(), app_id_.begin(),
-            [](char c){ return std::tolower(c); });
     if (!image_load_icon(icon_, tbar_->icon_theme(),  app_id_,
                  config_["icon-size"].isInt() ? config_["icon-size"].asInt() : 16))
         spdlog::warn("Failed to load icon for {}", app_id);