diff --git a/src/main/java/org/codelibs/fess/mylasta/action/FessLabels.java b/src/main/java/org/codelibs/fess/mylasta/action/FessLabels.java
index 3e868f364..e189ac81a 100644
--- a/src/main/java/org/codelibs/fess/mylasta/action/FessLabels.java
+++ b/src/main/java/org/codelibs/fess/mylasta/action/FessLabels.java
@@ -1040,7 +1040,7 @@ public class FessLabels extends UserMessages {
     /** The key of the message: Max Access Count */
     public static final String LABELS_max_access_count = "{labels.max_access_count}";
 
-    /** The key of the message: The number of Tread */
+    /** The key of the message: The number of Thread */
     public static final String LABELS_number_of_thread = "{labels.number_of_thread}";
 
     /** The key of the message: Interval time */
diff --git a/src/main/resources/fess_label_en.properties b/src/main/resources/fess_label_en.properties
index 010c92e88..e655ab425 100644
--- a/src/main/resources/fess_label_en.properties
+++ b/src/main/resources/fess_label_en.properties
@@ -337,7 +337,7 @@ labels.included_doc_paths=Included Paths For Indexing
 labels.excluded_doc_paths=Excluded Paths For Indexing
 labels.config_parameter=Config Parameters
 labels.max_access_count=Max Access Count
-labels.number_of_thread=The number of Tread
+labels.number_of_thread=The number of Thread
 labels.interval_time=Interval time
 labels.millisec=ms
 labels.permissions=Permissions