diff --git a/src/profile/identity/gemini/auth/memory.rs b/src/profile/identity/gemini/auth/memory.rs
index e01611b1..3a080ba8 100644
--- a/src/profile/identity/gemini/auth/memory.rs
+++ b/src/profile/identity/gemini/auth/memory.rs
@@ -28,7 +28,7 @@ impl Memory {
             .borrow_mut()
             .insert(url, profile_identity_gemini_id)
         {
-            Some(_) => Err(Error::Overwrite), // @TODO prevent?
+            Some(key) => Err(Error::Overwrite(key)), // @TODO prevent?
             None => Ok(()),
         }
     }
diff --git a/src/profile/identity/gemini/auth/memory/error.rs b/src/profile/identity/gemini/auth/memory/error.rs
index 4d8262af..0952f998 100644
--- a/src/profile/identity/gemini/auth/memory/error.rs
+++ b/src/profile/identity/gemini/auth/memory/error.rs
@@ -1,4 +1,4 @@
 #[derive(Debug)]
 pub enum Error {
-    Overwrite,
+    Overwrite(i64),
 }