diff --git a/UEFIDump/uefidump.cpp b/UEFIDump/uefidump.cpp
index 3aca67b..a66631d 100644
--- a/UEFIDump/uefidump.cpp
+++ b/UEFIDump/uefidump.cpp
@@ -17,11 +17,10 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <fstream>
 #include <sstream>
 #include <iomanip>
+#include <sys/stat.h>
 
 #ifdef WIN32
 #include <direct.h>
-#include <sys/stat.h>
-
 bool isExistOnFs(const UString & path) {
     struct _stat buf;
     return (_stat((const char*)path.toLocal8Bit(), &buf) == 0);
@@ -35,6 +34,19 @@ bool changeDirectory(const UString & dir) {
     return (_chdir((const char*)dir.toLocal8Bit()) == 0);
 }
 #else
+#include <unistd.h>
+bool isExistOnFs(const UString & path) {
+    struct stat buf;
+    return (stat((const char*)path.toLocal8Bit(), &buf) == 0);
+}
+
+bool makeDirectory(const UString & dir) {
+    return (mkdir((const char*)dir.toLocal8Bit(), ACCESSPERMS) == 0);
+}
+
+bool changeDirectory(const UString & dir) {
+    return (chdir((const char*)dir.toLocal8Bit()) == 0);
+}
 #endif
 
 USTATUS UEFIDumper::dump(const UByteArray & buffer, const UString & inPath, const UString & guid)
diff --git a/common/treemodel.h b/common/treemodel.h
index f48fa39..84ee141 100644
--- a/common/treemodel.h
+++ b/common/treemodel.h
@@ -36,6 +36,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include "types.h"
 #include "treeitem.h"
 
+class TreeModel;
+
 class UModelIndex
 {
     friend class TreeModel;