diff --git a/pageserver/src/branches.rs b/pageserver/src/branches.rs
index a2e554513e..958e03fb29 100644
--- a/pageserver/src/branches.rs
+++ b/pageserver/src/branches.rs
@@ -173,7 +173,7 @@ fn get_lsn_from_controlfile(path: &Path) -> Result<Lsn> {
     Ok(Lsn(lsn))
 }
 
-// Create the cluster temporarily in a initdbpath directory inside the repository
+// Create the cluster temporarily in 'initdbpath' directory inside the repository
 // to get bootstrap data for timeline initialization.
 //
 fn run_initdb(conf: &'static PageServerConf, initdbpath: &Path) -> Result<()> {
diff --git a/pageserver/src/layered_repository.rs b/pageserver/src/layered_repository.rs
index b44f113d74..6ec4636a6b 100644
--- a/pageserver/src/layered_repository.rs
+++ b/pageserver/src/layered_repository.rs
@@ -96,7 +96,8 @@ lazy_static! {
 }
 
 lazy_static! {
-    // NOTE: can be zero if pageserver was restarted an no activity happening
+    // NOTE: can be zero if pageserver was restarted and there hasn't been any
+    // activity yet.
     static ref LOGICAL_TIMELINE_SIZE: IntGaugeVec = register_int_gauge_vec!(
         "pageserver_logical_timeline_size",
         "Logical timeline size (bytes)",
diff --git a/pageserver/src/restore_local_repo.rs b/pageserver/src/restore_local_repo.rs
index fa43c5376a..ff394e8094 100644
--- a/pageserver/src/restore_local_repo.rs
+++ b/pageserver/src/restore_local_repo.rs
@@ -429,7 +429,7 @@ pub fn save_decoded_record(
             let dropdb = XlDropDatabase::decode(&mut buf);
 
             // To drop the database, we need to drop all the relations in it. Like in
-            // save_xlog_dbase_create(), use the the previous record's LSN in the list_rels() call
+            // save_xlog_dbase_create(), use the previous record's LSN in the list_rels() call
             let req_lsn = min(timeline.get_last_record_lsn(), lsn);
 
             for tablespace_id in dropdb.tablespace_ids {
diff --git a/zenith_metrics/src/lib.rs b/zenith_metrics/src/lib.rs
index 22d94dead8..0d1a60e978 100644
--- a/zenith_metrics/src/lib.rs
+++ b/zenith_metrics/src/lib.rs
@@ -34,12 +34,12 @@ lazy_static! {
 }
 
 // Records I/O stats in a "cross-platform" way.
-// Compiles both on macOs and Linux, but current macOs implementation always returns 0 as values for I/O stats.
-// An alternative is to read procfs (`/proc/[pid]/io`) which does not work under macOs at all, hence abandoned.
+// Compiles both on macOS and Linux, but current macOS implementation always returns 0 as values for I/O stats.
+// An alternative is to read procfs (`/proc/[pid]/io`) which does not work under macOS at all, hence abandoned.
 //
 // Uses https://www.freebsd.org/cgi/man.cgi?query=getrusage to retrieve the number of block operations
 // performed by the process.
-// We know the the size of the block, so we can determine the I/O bytes out of it.
+// We know the size of the block, so we can determine the I/O bytes out of it.
 // The value might be not 100% exact, but should be fine for Prometheus metrics in this case.
 #[allow(clippy::unnecessary_cast)]
 fn update_io_metrics() {