diff --git a/src/main/java/cz/sparko/boxitory/service/FilesystemBoxRepository.java b/src/main/java/cz/sparko/boxitory/service/FilesystemBoxRepository.java
index 506c802..95d1b67 100644
--- a/src/main/java/cz/sparko/boxitory/service/FilesystemBoxRepository.java
+++ b/src/main/java/cz/sparko/boxitory/service/FilesystemBoxRepository.java
@@ -36,6 +36,7 @@ public FilesystemBoxRepository(AppProperties appProperties, HashService hashServ
     @Override
     public List<String> getBoxes() {
         return Arrays.stream(boxHome.listFiles(File::isDirectory))
+                .filter(this::containsValidBoxFile)
                 .map(File::getName)
                 .sorted()
                 .collect(Collectors.toList());
@@ -82,8 +83,9 @@ private Map<String, List<File>> groupBoxFilesByVersion(File boxDir) {
 
     private boolean validateFilename(File boxFile) {
         String filename = boxFile.getName();
-        List<String> parsedFilename = Arrays.asList(filename.split("_"));
-        if (parsedFilename.size() != 3) {
+        File parentDir = boxFile.getParentFile();
+
+        if (!filename.matches(parentDir.getName() + "_(\\d+)_(\\w+)\\.box")) {
             LOG.warn("box file [{}] has wrong name. must be in format ${name}_${version}_${provider}.box", filename);
             return false;
         }
@@ -132,4 +134,9 @@ private BoxProvider createBoxProviderFromFile(File file) {
                 hashService.getChecksum(file.getAbsolutePath())
         );
     }
+
+    private boolean containsValidBoxFile(File file) {
+        File[] files = file.listFiles(this::validateFilename);
+        return files.length > 0;
+    }
 }
diff --git a/src/test/java/cz/sparko/boxitory/service/FilesystemBoxRepositoryTest.java b/src/test/java/cz/sparko/boxitory/service/FilesystemBoxRepositoryTest.java
index 1c8022c..4198b99 100644
--- a/src/test/java/cz/sparko/boxitory/service/FilesystemBoxRepositoryTest.java
+++ b/src/test/java/cz/sparko/boxitory/service/FilesystemBoxRepositoryTest.java
@@ -19,6 +19,7 @@
 import java.util.Optional;
 
 import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertFalse;
 import static org.testng.Assert.assertTrue;
 
 @SpringBootTest
@@ -168,7 +169,8 @@ public void givenValidRepositoryWithBoxes_whenIndex_thenGetValidBoxes() {
         BoxRepository boxRepository = new FilesystemBoxRepository(testAppProperties, new NoopHashService());
 
         List<String> boxes = boxRepository.getBoxes();
-        assertTrue(boxes.containsAll(Arrays.asList("f25", "f26", "f27", "f28", "f29")));
+        assertTrue(boxes.containsAll(Arrays.asList("f25", "f26", "f28", "f29")));
+        assertFalse(boxes.containsAll(Arrays.asList("f27")));
     }
 
     private String composePath(String boxName, String version, String provider) {