diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3c63a46..f350439 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,8 +49,6 @@ set(sdcv_SRCS
   src/distance.cpp 
   src/distance.hpp
   src/mapfile.hpp
-  src/file.hpp
-  src/file.cpp
 )
 
 if (ENABLE_NLS)
diff --git a/src/file.cpp b/src/file.cpp
deleted file mode 100644
index 4bb0178..0000000
--- a/src/file.cpp
+++ /dev/null
@@ -1,43 +0,0 @@
-#include <algorithm>
-
-#include <glib.h>
-
-#include "file.hpp"
-
-static void __for_each_file(const std::string& dirname, const std::string& suff,
-                            const std::list<std::string>& order_list, const std::list<std::string>& disable_list, 
-                            const std::function<void (const std::string&, bool)>& f)
-{
-	GDir *dir = g_dir_open(dirname.c_str(), 0, nullptr);	
-    if (dir) {
-		const gchar *filename;
-
-        while ((filename = g_dir_read_name(dir))!=nullptr) {	
-			const std::string fullfilename(dirname+G_DIR_SEPARATOR_S+filename);
-			if (g_file_test(fullfilename.c_str(), G_FILE_TEST_IS_DIR))
-				__for_each_file(fullfilename, suff, order_list, disable_list, f);
-            else if (g_str_has_suffix(filename, suff.c_str()) &&
-                     std::find(order_list.begin(), order_list.end(), 
-                               fullfilename)==order_list.end()) { 
-                const bool disable = std::find(disable_list.begin(), 
-                                         disable_list.end(), 
-                                         fullfilename)!=disable_list.end();
-                f(fullfilename, disable);
-			}
-		}
-		g_dir_close(dir);
-	}
-}
-
-
-void for_each_file(const std::list<std::string>& dirs_list, const std::string& suff,
-                   const std::list<std::string>& order_list, const std::list<std::string>& disable_list, 
-                   const std::function<void (const std::string&, bool)>& f)
-{
-	for (const std::string & item : order_list) {
-		const bool disable = std::find(disable_list.begin(), disable_list.end(), item) != disable_list.end();
-		f(item, disable);
-	}
-	for (const std::string& item : dirs_list)
-		__for_each_file(item, suff, order_list, disable_list, f);			
-}
diff --git a/src/file.hpp b/src/file.hpp
deleted file mode 100644
index 4657968..0000000
--- a/src/file.hpp
+++ /dev/null
@@ -1,10 +0,0 @@
-#pragma once
-
-#include <list>
-#include <string>
-#include <functional>
-
-extern void for_each_file(const std::list<std::string>& dirs_list, const std::string& suff,
-                          const std::list<std::string>& order_list, const std::list<std::string>& disable_list, 
-                          const std::function<void (const std::string&, bool)>& f);
-
diff --git a/src/libwrapper.hpp b/src/libwrapper.hpp
index b9c2180..99b4a40 100644
--- a/src/libwrapper.hpp
+++ b/src/libwrapper.hpp
@@ -3,7 +3,6 @@
 #include <string>
 #include <vector>
 
-#include "file.hpp"
 #include "stardict_lib.hpp"
 #include "readline.hpp"
 
diff --git a/src/stardict_lib.cpp b/src/stardict_lib.cpp
index 29f0a33..7f2881c 100644
--- a/src/stardict_lib.cpp
+++ b/src/stardict_lib.cpp
@@ -11,8 +11,8 @@
 #include <glib/gstdio.h>
 
 #include "distance.hpp"
-#include "file.hpp"
 #include "mapfile.hpp"
+#include "utils.hpp"
 
 #include "stardict_lib.hpp"
 
diff --git a/src/utils.cpp b/src/utils.cpp
index 5c78ef9..dee1f8a 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -26,6 +26,7 @@
 #include <glib/gi18n.h>
 #include <cstdlib>
 #include <cstdio>
+#include <algorithm>
 
 #include "utils.hpp"
 
@@ -67,3 +68,41 @@ char *locale_to_utf8(const char *loc_str)
 
 	return str;
 }
+
+static void __for_each_file(const std::string& dirname, const std::string& suff,
+                            const std::list<std::string>& order_list, const std::list<std::string>& disable_list, 
+                            const std::function<void (const std::string&, bool)>& f)
+{
+	GDir *dir = g_dir_open(dirname.c_str(), 0, nullptr);	
+    if (dir) {
+		const gchar *filename;
+
+        while ((filename = g_dir_read_name(dir))!=nullptr) {	
+			const std::string fullfilename(dirname+G_DIR_SEPARATOR_S+filename);
+			if (g_file_test(fullfilename.c_str(), G_FILE_TEST_IS_DIR))
+				__for_each_file(fullfilename, suff, order_list, disable_list, f);
+            else if (g_str_has_suffix(filename, suff.c_str()) &&
+                     std::find(order_list.begin(), order_list.end(), 
+                               fullfilename)==order_list.end()) { 
+                const bool disable = std::find(disable_list.begin(), 
+                                         disable_list.end(), 
+                                         fullfilename)!=disable_list.end();
+                f(fullfilename, disable);
+			}
+		}
+		g_dir_close(dir);
+	}
+}
+
+
+void for_each_file(const std::list<std::string>& dirs_list, const std::string& suff,
+                   const std::list<std::string>& order_list, const std::list<std::string>& disable_list, 
+                   const std::function<void (const std::string&, bool)>& f)
+{
+	for (const std::string & item : order_list) {
+		const bool disable = std::find(disable_list.begin(), disable_list.end(), item) != disable_list.end();
+		f(item, disable);
+	}
+	for (const std::string& item : dirs_list)
+		__for_each_file(item, suff, order_list, disable_list, f);			
+}
diff --git a/src/utils.hpp b/src/utils.hpp
index 2fa41dd..7b0874e 100644
--- a/src/utils.hpp
+++ b/src/utils.hpp
@@ -2,6 +2,8 @@
 
 #include <glib.h>
 #include <string>
+#include <list>
+#include <functional>
 
 template <typename T, typename unref_res_t, void (*unref_res)(unref_res_t *)>
 class ResourceWrapper {
@@ -57,3 +59,7 @@ namespace glib {
 
 extern char *locale_to_utf8(const char *locstr);
 extern std::string utf8_to_locale_ign_err(const std::string& utf8_str);
+
+extern void for_each_file(const std::list<std::string>& dirs_list, const std::string& suff,
+                          const std::list<std::string>& order_list, const std::list<std::string>& disable_list, 
+                          const std::function<void (const std::string&, bool)>& f);