diff --git a/src/asset_cache.c b/src/asset_cache.c
index 93d8403b..940359ab 100644
--- a/src/asset_cache.c
+++ b/src/asset_cache.c
@@ -77,6 +77,7 @@ INTERNAL void refresh_dbg_table(void)
 INTERNAL struct asset *asset_cache_get_slot_locked(struct sys_lock *lock, struct string key, u64 hash)
 {
     sys_assert_locked_s(lock, &G.lookup_mutex);
+    (UNUSED)lock;
 
     u64 index = hash % ARRAY_COUNT(G.lookup);
     while (true) {
diff --git a/src/mixer.c b/src/mixer.c
index 16448561..75a65082 100644
--- a/src/mixer.c
+++ b/src/mixer.c
@@ -105,6 +105,7 @@ INTERNAL struct track *track_from_handle(struct mixer_track_handle handle)
 INTERNAL struct track *track_alloc_locked(struct sys_lock *lock, struct sound *sound)
 {
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     struct track *track = NULL;
     if (G.track_first_free) {
@@ -143,6 +144,7 @@ INTERNAL struct track *track_alloc_locked(struct sys_lock *lock, struct sound *s
 INTERNAL void track_release_locked(struct sys_lock *lock, struct track *track)
 {
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     /* Remove from playing list */
     struct track *prev = track->prev;
diff --git a/src/sys_win32.c b/src/sys_win32.c
index 0002b72b..da3e64e7 100644
--- a/src/sys_win32.c
+++ b/src/sys_win32.c
@@ -1580,6 +1580,7 @@ struct thread_local_store *sys_thread_get_thread_local_store(void)
 INTERNAL struct win32_thread *win32_thread_alloc_locked(struct sys_lock *lock)
 {
     sys_assert_locked_e(lock, &G.threads_mutex);
+    (UNUSED)lock;
 
     struct win32_thread *t = NULL;
     if (G.threads_first_free) {
@@ -1605,6 +1606,7 @@ INTERNAL struct win32_thread *win32_thread_alloc_locked(struct sys_lock *lock)
 INTERNAL void win32_thread_release_locked(struct sys_lock *lock, struct win32_thread *t)
 {
     sys_assert_locked_e(lock, &G.threads_mutex);
+    (UNUSED)lock;
 
     if (t->prev) {
         t->prev->next = t->next;
@@ -1628,6 +1630,7 @@ INTERNAL void win32_thread_release_locked(struct sys_lock *lock, struct win32_th
 INTERNAL struct win32_thread *win32_thread_from_sys_thread_locked(struct sys_lock *lock, struct sys_thread st)
 {
     sys_assert_locked_s(lock, &G.threads_mutex);
+    (UNUSED)lock;
 
     u64 gen = st.handle[0];
     struct win32_thread *t = (struct win32_thread *)st.handle[1];
@@ -1641,6 +1644,7 @@ INTERNAL struct win32_thread *win32_thread_from_sys_thread_locked(struct sys_loc
 INTERNAL struct sys_thread sys_thread_from_win32_thread_locked(struct sys_lock *lock, struct win32_thread *t)
 {
     sys_assert_locked_s(lock, &G.threads_mutex);
+    (UNUSED)lock;
 
     return (struct sys_thread) {
         .handle[0] = t->gen,
diff --git a/src/work.c b/src/work.c
index a57caa39..cd405465 100644
--- a/src/work.c
+++ b/src/work.c
@@ -166,6 +166,7 @@ INTERNAL struct work *work_alloc_locked(struct sys_lock *lock)
 {
     __prof;
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     struct work *work = NULL;
 
@@ -192,6 +193,7 @@ INTERNAL struct work *work_alloc_locked(struct sys_lock *lock)
 INTERNAL void work_release_locked(struct sys_lock *lock, struct work *work)
 {
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     work->next_free = G.free_work_head;
     G.free_work_head = work;
@@ -201,6 +203,7 @@ INTERNAL void work_release_locked(struct sys_lock *lock, struct work *work)
 INTERNAL struct work_handle work_to_handle_locked(struct sys_lock *lock, struct work *work)
 {
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     return (struct work_handle) {
         .work = work,
@@ -211,6 +214,7 @@ INTERNAL struct work_handle work_to_handle_locked(struct sys_lock *lock, struct
 INTERNAL struct work_task *task_alloc_locked(struct sys_lock *lock)
 {
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     struct work_task *task = NULL;
 
@@ -231,6 +235,7 @@ INTERNAL struct work_task *task_alloc_locked(struct sys_lock *lock)
 INTERNAL void task_release_locked(struct sys_lock *lock, struct work_task *task)
 {
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     task->next_free = G.free_task_head;
     G.free_task_head = task;
@@ -244,6 +249,7 @@ INTERNAL void work_schedule_locked(struct sys_lock *lock, struct work *work)
 {
     __prof;
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     enum work_priority priority = work->priority;
 
@@ -282,6 +288,7 @@ INTERNAL void work_unschedule_locked(struct sys_lock *lock, struct work *work)
 {
     __prof;
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     struct work *prev = (struct work *)work->prev_scheduled;
     struct work *next = (struct work *)work->next_scheduled;
@@ -556,6 +563,7 @@ struct work_handle work_slate_end_and_help(struct work_slate *ws, enum work_prio
 INTERNAL struct work *work_from_handle_locked(struct sys_lock *lock, struct work_handle handle)
 {
     sys_assert_locked_e(lock, &G.mutex);
+    (UNUSED)lock;
 
     struct work *work = handle.work;
     if (work->gen != handle.gen) {