diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7933feee..dfe18f93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,9 @@
     but in practice, it made little difference on Windows and would rarely be desired on other platforms,
     leading to confusion.
 * Fixed:
+  * When looking for game install folders during a full scan,
+    Ludusavi did not recognize partial folder name matches.
+    ([Investigated by sluedecke][https://github.com/mtkennerly/ludusavi/issues/123])
   * When restoring a backup that was made on a different OS,
     it could get stuck before completing the process.
     ([Contributed by Hizoul](https://github.com/mtkennerly/ludusavi/pull/127))
diff --git a/README.md b/README.md
index 156e2458..b06a7b61 100644
--- a/README.md
+++ b/README.md
@@ -232,6 +232,13 @@ Ludusavi also stores `manifest.yaml` (info on what to back up) here.
 You should not modify that file, because Ludusavi will overwrite your changes
 whenever it downloads a new copy.
 
+### Logging
+Log files are stored in the config folder (see above).
+By default, only warnings and errors are logged,
+but you can customize this by setting the `RUST_LOG` environment variable
+(e.g., `RUST_LOG=ludusavi=debug`).
+The most recent 5 log files are kept, rotating on app launch or when a log reaches 10 MiB.
+
 ## Interfaces
 ### CLI API
 CLI mode defaults to a human-readable format, but you can switch to a
diff --git a/src/prelude.rs b/src/prelude.rs
index f532a362..a424963c 100644
--- a/src/prelude.rs
+++ b/src/prelude.rs
@@ -555,8 +555,9 @@ impl InstallDirRanking {
             if candidate.0 == i64::MAX {
                 return Some(candidate.1.to_owned());
             }
-            for other in self.0.values() {
-                if other.0 > candidate.0 {
+            for ((other_root, other_game), (other_score, other_subdir)) in &self.0 {
+                if other_root == root && other_subdir == &candidate.1 && other_score > &candidate.0 {
+                    log::info!("[{name}] outranked by '{other_game}' for subdir '{other_subdir}'");
                     return None;
                 }
             }