diff --git a/FileUtils.cpp b/FileUtils.cpp
index 76e3098d..b3bcdffb 100644
--- a/FileUtils.cpp
+++ b/FileUtils.cpp
@@ -109,18 +109,18 @@ bool CFile::FType(const CString sFileName, EFileTypes eType, bool bUseLstat) {
 // Functions to retrieve file information
 //
 bool CFile::Exists() const { return CFile::Exists(m_sLongName); }
-unsigned long long CFile::GetSize() const { return CFile::GetSize(m_sLongName); }
+off_t CFile::GetSize() const { return CFile::GetSize(m_sLongName); }
 time_t CFile::GetATime() const { return CFile::GetATime(m_sLongName); }
 time_t CFile::GetMTime() const { return CFile::GetMTime(m_sLongName); }
 time_t CFile::GetCTime() const { return CFile::GetCTime(m_sLongName); }
-int CFile::GetUID() const { return CFile::GetUID(m_sLongName); }
-int CFile::GetGID() const { return CFile::GetGID(m_sLongName); }
+uid_t CFile::GetUID() const { return CFile::GetUID(m_sLongName); }
+gid_t CFile::GetGID() const { return CFile::GetGID(m_sLongName); }
 bool CFile::Exists(const CString& sFile) {
 	struct stat st;
 	return (stat(sFile.c_str(), &st) == 0);
 }
 
-unsigned long long CFile::GetSize(const CString& sFile) {
+off_t CFile::GetSize(const CString& sFile) {
 	struct stat st;
 	if (stat(sFile.c_str(), &st) != 0) {
 		return 0;
@@ -144,12 +144,12 @@ time_t CFile::GetCTime(const CString& sFile) {
 	return (stat(sFile.c_str(), &st) != 0) ? 0 : st.st_ctime;
 }
 
-int CFile::GetUID(const CString& sFile) {
+uid_t CFile::GetUID(const CString& sFile) {
 	struct stat st;
 	return (stat(sFile.c_str(), &st) != 0) ? -1 : (int) st.st_uid;
 }
 
-int CFile::GetGID(const CString& sFile) {
+gid_t CFile::GetGID(const CString& sFile) {
 	struct stat st;
 	return (stat(sFile.c_str(), &st) != 0) ? -1 : (int) st.st_gid;
 }
@@ -161,11 +161,11 @@ int CFile::GetInfo(const CString& sFile, struct stat& st) {
 // Functions to manipulate the file on the filesystem
 //
 bool CFile::Delete() { return CFile::Delete(m_sLongName); }
-int CFile::Move(const CString& sNewFileName, bool bOverwrite) {
+bool CFile::Move(const CString& sNewFileName, bool bOverwrite) {
 	return CFile::Move(m_sLongName, sNewFileName, bOverwrite);
 }
 
-int CFile::Copy(const CString& sNewFileName, bool bOverwrite) {
+bool CFile::Copy(const CString& sNewFileName, bool bOverwrite) {
 	return CFile::Copy(m_sLongName, sNewFileName, bOverwrite);
 }
 
diff --git a/FileUtils.h b/FileUtils.h
index cdbfa260..4200c96a 100644
--- a/FileUtils.h
+++ b/FileUtils.h
@@ -68,28 +68,28 @@ public:
 	// Functions to retrieve file information
 	//
 	bool Exists() const;
-	unsigned long long GetSize() const;
+	off_t GetSize() const;
 	time_t GetATime() const;
 	time_t GetMTime() const;
 	time_t GetCTime() const;
-	int GetUID() const;
-	int GetGID() const;
+	uid_t GetUID() const;
+	gid_t GetGID() const;
 	static bool Exists(const CString& sFile);
 
-	static unsigned long long GetSize(const CString& sFile);
+	static off_t GetSize(const CString& sFile);
 	static time_t GetATime(const CString& sFile);
 	static time_t GetMTime(const CString& sFile);
 	static time_t GetCTime(const CString& sFile);
-	static int GetUID(const CString& sFile);
-	static int GetGID(const CString& sFile);
+	static uid_t GetUID(const CString& sFile);
+	static gid_t GetGID(const CString& sFile);
 	static int GetInfo(const CString& sFile, struct stat& st);
 
 	//
 	// Functions to manipulate the file on the filesystem
 	//
 	bool Delete();
-	int Move(const CString& sNewFileName, bool bOverwrite = false);
-	int Copy(const CString& sNewFileName, bool bOverwrite = false);
+	bool Move(const CString& sNewFileName, bool bOverwrite = false);
+	bool Copy(const CString& sNewFileName, bool bOverwrite = false);
 
 	static bool Delete(const CString& sFileName);
 	static bool Move(const CString& sOldFileName, const CString& sNewFileName, bool bOverwrite = false);