diff --git a/src/archive/tar.rs b/src/archive/tar.rs
index 010bb45..8dc5d1e 100644
--- a/src/archive/tar.rs
+++ b/src/archive/tar.rs
@@ -51,7 +51,9 @@ where
             let path = entry.path();
 
             println!("Compressing '{}'.", utils::to_utf(path));
-            if !path.is_dir() {
+            if path.is_dir() {
+                builder.append_dir(path, path)?;
+            } else {
                 let mut file = fs::File::open(path)?;
                 builder.append_file(path, &mut file)?;
             }
diff --git a/tests/compress_empty_dir.rs b/tests/compress_empty_dir.rs
index 4a7c108..95f3348 100644
--- a/tests/compress_empty_dir.rs
+++ b/tests/compress_empty_dir.rs
@@ -5,7 +5,12 @@ use std::{env, path::PathBuf};
 use utils::*;
 
 #[test]
-fn test_compress_decompress_with_empty_dir() {
+fn test_each_format() {
+    test_compress_decompress_with_empty_dir("tar");
+    test_compress_decompress_with_empty_dir("zip");
+}
+
+fn test_compress_decompress_with_empty_dir(format: &str) {
     // System temporary directory depends on the platform, for linux it's /tmp
     let system_tmp = env::temp_dir();
 
@@ -19,8 +24,6 @@ fn test_compress_decompress_with_empty_dir() {
 
     let mut file_paths: Vec<PathBuf> = vec![empty_dir_path];
 
-    let format = "zip";
-
     let compressed_archive_path: PathBuf = compress_files(&testing_dir_path, &file_paths, &format);
 
     let mut extracted_paths = extract_files(&compressed_archive_path);