1 files changed, 3 insertions, 3 deletions
diff --git a/toolkit/components/glean/bindings/private/Timespan.cpp b/toolkit/components/glean/bindings/private/Timespan.cpp
index 2ab1f0dbba..7f154152eb 100644
--- a/toolkit/components/glean/bindings/private/Timespan.cpp
+++ b/toolkit/components/glean/bindings/private/Timespan.cpp
@@ -93,7 +93,7 @@ void TimespanMetric::Start() const {
   auto optScalarId = ScalarIdForMetric(mId);
   if (optScalarId) {
     auto scalarId = optScalarId.extract();
-    GetTimesToStartsLock().apply([&](auto& lock) {
+    GetTimesToStartsLock().apply([&](const auto& lock) {
       (void)NS_WARN_IF(lock.ref()->Remove(scalarId));
       lock.ref()->InsertOrUpdate(scalarId, TimeStamp::Now());
     });
@@ -105,7 +105,7 @@ void TimespanMetric::Stop() const {
   auto optScalarId = ScalarIdForMetric(mId);
   if (optScalarId) {
     auto scalarId = optScalarId.extract();
-    GetTimesToStartsLock().apply([&](auto& lock) {
+    GetTimesToStartsLock().apply([&](const auto& lock) {
       auto optStart = lock.ref()->Extract(scalarId);
       if (!NS_WARN_IF(!optStart)) {
         double delta = (TimeStamp::Now() - optStart.extract()).ToMilliseconds();
@@ -127,7 +127,7 @@ void TimespanMetric::Cancel() const {
   if (optScalarId) {
     auto scalarId = optScalarId.extract();
     GetTimesToStartsLock().apply(
-        [&](auto& lock) { lock.ref()->Remove(scalarId); });
+        [&](const auto& lock) { lock.ref()->Remove(scalarId); });
   }
   fog_timespan_cancel(mId);
 }