diff --git a/dzgui/api/acf.py b/dzgui/api/acf.py
index 24816a0..ab35b3b 100644
--- a/dzgui/api/acf.py
+++ b/dzgui/api/acf.py
@@ -71,7 +71,7 @@ class ACF:
             return acf
 
     def search_key(self, key: str) -> str:
-        return self.dict["AppState"][key]
+        return str(self.dict["AppState"][key])
 
     def date_to_str(self, epoch: int) -> str | None:
         if epoch == 0:
@@ -89,7 +89,7 @@ class ACF:
     def get_last_updated(self) -> str | None:
         return self.get_date_by_key("LastUpdated")
 
-    def get_last_played(self) -> str:
+    def get_last_played(self) -> str | None:
         return self.get_date_by_key("LastPlayed")
 
     def get_allows_downloads(self) -> int | None:
diff --git a/dzgui/api/steam.py b/dzgui/api/steam.py
index a7f8732..35061c6 100644
--- a/dzgui/api/steam.py
+++ b/dzgui/api/steam.py
@@ -389,17 +389,19 @@ def get_running_app() -> int | None:
     return None
 
 
-def get_last_updated(path: Path, appid: int) -> str:
+def get_last_updated(path: Path, appid: int) -> str | None:
     root_path = get_app_path(path, appid)
     acf = root_path.joinpath(f"steamapps/appmanifest_{appid}.acf")
     return ACF(acf).get_last_updated()
 
-def get_last_played(path: Path, appid: int) -> str:
+
+def get_last_played(path: Path, appid: int) -> str | None:
     root_path = get_app_path(path, appid)
     acf = root_path.joinpath(f"steamapps/appmanifest_{appid}.acf")
     # TODO: make tests for this, use fixtures
     return ACF(acf).get_last_played()
 
+
 def get_app_allows_downloads(path: Path, appid: int) -> bool:
     try:
         root_path = get_app_path(path, appid)