diff --git a/toonz/sources/translations/japanese/tnztools.ts b/toonz/sources/translations/japanese/tnztools.ts
index 4b363c3..edb752f 100644
--- a/toonz/sources/translations/japanese/tnztools.ts
+++ b/toonz/sources/translations/japanese/tnztools.ts
@@ -140,7 +140,7 @@
     </message>
     <message>
         <source>Smooth:</source>
-        <translation>補正：</translation>
+        <translation>平滑化：</translation>
     </message>
 </context>
 <context>