diff --git a/ipc/glue/IdleSchedulerChild.cpp b/ipc/glue/IdleSchedulerChild.cpp
index 6e749eac36c6..53df5b222f64 100644
--- a/ipc/glue/IdleSchedulerChild.cpp
+++ b/ipc/glue/IdleSchedulerChild.cpp
@@ -12,8 +12,7 @@
 #include "mozilla/Telemetry.h"
 #include "BackgroundChild.h"
 
-namespace mozilla {
-namespace ipc {
+namespace mozilla::ipc {
 
 static IdleSchedulerChild* sMainThreadIdleScheduler = nullptr;
 
@@ -122,5 +121,4 @@ IdleSchedulerChild* IdleSchedulerChild::GetMainThreadIdleScheduler() {
   return sMainThreadIdleScheduler;
 }
 
-}  // namespace ipc
-}  // namespace mozilla
+}  // namespace mozilla::ipc
diff --git a/ipc/glue/IdleSchedulerParent.cpp b/ipc/glue/IdleSchedulerParent.cpp
index 50fe1806d53b..b38ddc8ae43d 100644
--- a/ipc/glue/IdleSchedulerParent.cpp
+++ b/ipc/glue/IdleSchedulerParent.cpp
@@ -14,8 +14,7 @@
 #include "nsITimer.h"
 #include "nsIThread.h"
 
-namespace mozilla {
-namespace ipc {
+namespace mozilla::ipc {
 
 base::SharedMemory* IdleSchedulerParent::sActiveChildCounter = nullptr;
 std::bitset<NS_IDLE_SCHEDULER_COUNTER_ARRAY_LENGHT>
@@ -452,5 +451,4 @@ void IdleSchedulerParent::StarvationCallback(nsITimer* aTimer, void* aData) {
   NS_RELEASE(sStarvationPreventer);
 }
 
-}  // namespace ipc
-}  // namespace mozilla
+}  // namespace mozilla::ipc