diff --git a/css_utils.py b/css_utils.py
index 9067182..a38c116 100644
--- a/css_utils.py
+++ b/css_utils.py
@@ -101,7 +101,17 @@ def get_steam_path() -> str:
 
 def is_steam_beta_active() -> bool:
     beta_path = os.path.join(get_steam_path(), "package", "beta")
-    return os.path.exists(beta_path)
+    if not os.path.exists(beta_path):
+        return False
+
+    with open(beta_path, 'r') as fp:
+        content = fp.read().strip()
+
+    stable_branches = [
+        "steamdeck_stable",
+    ]
+    
+    return content not in stable_branches
 
 def create_steam_symlink() -> Result:
     return create_symlink(get_theme_path(), os.path.join(get_steam_path(), "steamui", "themes_custom"))