diff --git a/source/src/main/java/one/nem/lacerta/source/file/FileManager.java b/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
index 0fa4062b..1d2bdadf 100644
--- a/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
+++ b/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
@@ -12,7 +12,7 @@ public interface FileManager {
     void backDir(); //cd ..
     void backRootDir(); //cd /
     List<Path> getList();
-    void createDir();
-    void removeDir();
+    void createDir(String dirName);
+    void removeDir(String dirName);
 
 }