diff --git a/src/interfaces/IFileSystem.sol b/src/interfaces/IFileSystem.sol
index 0f053f5..5358e10 100644
--- a/src/interfaces/IFileSystem.sol
+++ b/src/interfaces/IFileSystem.sol
@@ -32,6 +32,9 @@ interface IFileSystem {
      */
     error InodeNotFound();
 
+    /**
+     * @notice Error thrown when file name is empty
+     */
     error InvalidFileName();
 
     /**
diff --git a/test/FileSystem/CreateDirectory.sol b/test/FileSystem/CreateDirectory.sol
index 5f19a37..54144a5 100644
--- a/test/FileSystem/CreateDirectory.sol
+++ b/test/FileSystem/CreateDirectory.sol
@@ -46,6 +46,12 @@ contract CreateDirectory is FileSystemTest {
         fileSystem.createDirectory(fileNames, filePointers);
     }
 
+    function test_RevertsWhen_FileNameEmpty() public {
+        fileNames[0] = "";
+        vm.expectRevert(INVALID_FILENAME_ERROR);
+        fileSystem.createDirectory(fileNames, filePointers);
+    }
+
     function test_RevertsWhen_InvalidCharacters() public {
         fileNames[0] = "/";
         vm.expectRevert(INVALID_CHARACTER_ERROR);
diff --git a/test/FileSystem/FileSystemTest.t.sol b/test/FileSystem/FileSystemTest.t.sol
index 6fe15e4..6ba55ef 100644
--- a/test/FileSystem/FileSystemTest.t.sol
+++ b/test/FileSystem/FileSystemTest.t.sol
@@ -27,6 +27,7 @@ contract FileSystemTest is Test {
     bytes4 internal immutable FILE_NOT_FOUND_ERROR = IFileSystem.FileNotFound.selector;
     bytes4 internal immutable INODE_NOT_FOUND_ERROR = IFileSystem.InodeNotFound.selector;
     bytes4 internal immutable INVALID_CHARACTER_ERROR = IFileSystem.InvalidCharacter.selector;
+    bytes4 internal immutable INVALID_FILENAME_ERROR = IFileSystem.InvalidFileName.selector;
     bytes4 internal immutable LENGTH_MISMATCH_ERROR = IFileSystem.LengthMismatch.selector;
 
     function setUp() public virtual {