diff --git a/dlib/auth/oidc.py b/dlib/auth/oidc.py
index 65db07e..62b4af1 100644
--- a/dlib/auth/oidc.py
+++ b/dlib/auth/oidc.py
@@ -25,9 +25,10 @@ def _normalize_issuer(value: str | None) -> str | None:
     if not value:
         return None
     normalized = value.strip().rstrip("/")
-    normalized = normalized.replace("/application/o/authorize", "")
-    normalized = normalized.rstrip("/")
-    return f"{normalized}/application/o"
+    normalized = normalized.replace("/application/o/authorize/", "/application/o/")
+    normalized = normalized.replace("/application/o/authorize", "/application/o")
+    normalized = normalized.replace("//application", "/application")
+    return normalized.rstrip("/")
 
 
 class OidcTokenValidator: