diff --git a/admission.py b/admission.py
index 250843b..1e4c5b3 100644
--- a/admission.py
+++ b/admission.py
@@ -26,8 +26,15 @@ def webhook_online(stream) -> None:
     data = {"username": f"{config.WEBHOOK_NAME} Online", "content": config.WEBHOOK_ONLINE}
 
     if config.is_avatar_ready():
-        target_av = f"{stream[1]}/{stream[2]}.png".lower()
-        avatar = target_av if Path(config.WEBHOOK_AVATAR_PATH, target_av).is_file() else "default.png"
+        target_av = f"{stream[1]}/{stream[2]}.png"
+
+        # Try an exact match first, then lower case, then use the default
+        if Path(config.WEBHOOK_AVATAR_PATH, target_av).is_file():
+            avatar = target_av
+        elif Path(config.WEBHOOK_AVATAR_PATH, target_av.lower()).is_file():
+            avatar = target_av.lower()
+        else:
+            avatar = "default.png"
         data["avatar_url"] = f"{config.WEBHOOK_AVATAR_URL}/{avatar}"
 
     requests.post(config.WEBHOOK_URL, timeout=10, json=data, headers=config.WEBHOOK_HEADERS)