diff --git a/shiroha-server/src/main/java/io/nanachiyo0721/shiroha/utils/profiling/RegionScheduleProfilerManager.java b/shiroha-server/src/main/java/io/nanachiyo0721/shiroha/utils/profiling/RegionScheduleProfilerManager.java
index 281f6bc..cbc28ba 100644
--- a/shiroha-server/src/main/java/io/nanachiyo0721/shiroha/utils/profiling/RegionScheduleProfilerManager.java
+++ b/shiroha-server/src/main/java/io/nanachiyo0721/shiroha/utils/profiling/RegionScheduleProfilerManager.java
@@ -33,7 +33,7 @@ public class RegionScheduleProfilerManager {
     private static final Path PROFILER_FOLDER = Path.of("./shiroha_profiler");
     private static final Pattern SESSION_FOLDER_PATTERN = Pattern.compile("session-([1-9]\\d*)");
 
-    private final Map<Long, RegionScheduleProfiler> registereddProfilers = new ConcurrentHashMap<>();
+    private final Map<Long, RegionScheduleProfiler> registeredProfilers = new ConcurrentHashMap<>();
     private final OpThread opThread = new OpThread();
 
     // note: following fields are managed by the OpThread
@@ -154,7 +154,7 @@ public class RegionScheduleProfilerManager {
             return;
         }
 
-        for (RegionScheduleProfiler profiler : this.registereddProfilers.values()) {
+        for (RegionScheduleProfiler profiler : this.registeredProfilers.values()) {
             profiler.toggle(false);
         }
     }
@@ -187,7 +187,7 @@ public class RegionScheduleProfilerManager {
 
     private Throwable stopActiveProfiling() {
         for (long id : this.lastProfilingIds) {
-            final RegionScheduleProfiler profiler = this.registereddProfilers.get(id);
+            final RegionScheduleProfiler profiler = this.registeredProfilers.get(id);
 
             // may be it was death, so no need to warn
             if (profiler == null) {
@@ -295,7 +295,7 @@ public class RegionScheduleProfilerManager {
             }
 
             // check for existence
-            final RegionScheduleProfiler profiler = this.registereddProfilers.get(regionId);
+            final RegionScheduleProfiler profiler = this.registeredProfilers.get(regionId);
             if (profiler == null) {
                 callback.completeExceptionally(new IllegalArgumentException("No registered region profiler with id " + regionId));
                 return;
@@ -429,7 +429,7 @@ public class RegionScheduleProfilerManager {
     public RegionScheduleProfiler register(long id) {
         RegionScheduleProfiler ret = new RegionScheduleProfiler(id);
 
-        if (this.registereddProfilers.putIfAbsent(id, ret) != null) {
+        if (this.registeredProfilers.putIfAbsent(id, ret) != null) {
             throw new IllegalStateException("Already registed profiler for region of id " + id + "!");
         }
 
@@ -437,7 +437,7 @@ public class RegionScheduleProfilerManager {
     }
 
     public void deRegister(long id) {
-        this.registereddProfilers.remove(id);
+        this.registeredProfilers.remove(id);
     }
 
     public CompletableFuture<Path> export(