diff --git a/include/FileSystem.h b/include/FileSystem.h
index c5693bd4..4b167350 100644
--- a/include/FileSystem.h
+++ b/include/FileSystem.h
@@ -102,7 +102,6 @@ protected:
 	Glib::ustring output, error ;
 	Sector T, N, S ;  //File system [T]otal num of blocks, [N]um of free (or used) blocks, block [S]ize
 	int exit_status ;
-	unsigned int index ;
 
 private:
 	int execute_command_internal( const Glib::ustring & command, OperationDetail & operationdetail,
diff --git a/src/ext2.cc b/src/ext2.cc
index bcd05309..e3736d01 100644
--- a/src/ext2.cc
+++ b/src/ext2.cc
@@ -128,7 +128,7 @@ void ext2::set_used_sectors( Partition & partition )
 	//  unmounted.
 	if ( ! Utils::execute_command( dump_cmd + " -h " + partition .get_path(), output, error, true ) )
 	{
-		index = output .find( "Block count:" ) ;
+		Glib::ustring::size_type index = output.find( "Block count:" );
 		if ( index >= output .length() ||
 		     sscanf( output.substr( index ) .c_str(), "Block count: %Ld", &T ) != 1 )
 			T = -1 ;
diff --git a/src/fat16.cc b/src/fat16.cc
index e85042ff..fe388987 100644
--- a/src/fat16.cc
+++ b/src/fat16.cc
@@ -136,7 +136,7 @@ void fat16::set_used_sectors( Partition & partition )
 	if ( exit_status == 0 || exit_status == 1 )
 	{
 		//total file system size in logical sectors
-		index = output .rfind( "\n", output .find( "sectors total" ) ) +1 ;
+		Glib::ustring::size_type index = output.rfind( "\n", output.find( "sectors total" ) ) + 1;
 		if ( index >= output .length() || sscanf( output .substr( index ) .c_str(), "%Ld", &T ) != 1 )
 			T = -1 ;
 
diff --git a/src/jfs.cc b/src/jfs.cc
index 866bce0f..210406be 100644
--- a/src/jfs.cc
+++ b/src/jfs.cc
@@ -79,7 +79,7 @@ void jfs::set_used_sectors( Partition & partition )
 	if ( ! Utils::execute_command( "sh -c 'echo dm | jfs_debugfs " + partition.get_path() + "'", output, error, true ) )
 	{
 		//blocksize
-		index = output .find( "Block Size:" ) ;
+		Glib::ustring::size_type index = output.find( "Block Size:" );
 		if ( index >= output .length() || 
 		     sscanf( output .substr( index ) .c_str(), "Block Size: %Ld", &S ) != 1 ) 
 			S = -1 ;
diff --git a/src/ntfs.cc b/src/ntfs.cc
index 50716be7..90031cb7 100644
--- a/src/ntfs.cc
+++ b/src/ntfs.cc
@@ -127,7 +127,7 @@ void ntfs::set_used_sectors( Partition & partition )
 		"ntfsresize --info --force --no-progress-bar " + partition .get_path(), output, error, true ) ;
 	if ( exit_status == 0 || exit_status == 1 )
 	{
-		index = output .find( "Current volume size:" ) ;
+		Glib::ustring::size_type index = output.find( "Current volume size:" );
 		if ( index >= output .length() ||
 		     sscanf( output .substr( index ) .c_str(), "Current volume size: %Ld", &T ) != 1 )
 			T = -1 ;
diff --git a/src/reiser4.cc b/src/reiser4.cc
index 92d49115..b588cc44 100644
--- a/src/reiser4.cc
+++ b/src/reiser4.cc
@@ -64,7 +64,7 @@ void reiser4::set_used_sectors( Partition & partition )
 {
 	if ( ! Utils::execute_command( "debugfs.reiser4 " + partition .get_path(), output, error, true ) )
 	{
-		index = output .find( "\nblocks:" ) ;
+		Glib::ustring::size_type index = output.find( "\nblocks:" );
 		if ( index >= output .length() ||
 		     sscanf( output.substr( index ) .c_str(), "\nblocks: %Ld", &T ) != 1 )
 			T = -1 ;
diff --git a/src/reiserfs.cc b/src/reiserfs.cc
index 710f3f95..ca493cfc 100644
--- a/src/reiserfs.cc
+++ b/src/reiserfs.cc
@@ -81,7 +81,7 @@ void reiserfs::set_used_sectors( Partition & partition )
 {
 	if ( ! Utils::execute_command( "debugreiserfs " + partition .get_path(), output, error, true ) )
 	{
-		index = output .find( "Count of blocks on the device:" ) ;
+		Glib::ustring::size_type index = output.find( "Count of blocks on the device:" );
 		if ( index >= output .length() ||
 		     sscanf( output .substr( index ) .c_str(), "Count of blocks on the device: %Ld", &T ) != 1 )
 			T = -1 ;
diff --git a/src/xfs.cc b/src/xfs.cc
index 1cc36a6d..d43cf89a 100644
--- a/src/xfs.cc
+++ b/src/xfs.cc
@@ -99,7 +99,7 @@ void xfs::set_used_sectors( Partition & partition )
 			S = -1 ;
 
 		//filesystem blocks
-		index = output .find( "\ndblocks" ) ;
+		Glib::ustring::size_type index = output.find( "\ndblocks" );
 		if ( index > output .length() ||
 		     sscanf( output .substr( index ) .c_str(), "\ndblocks = %Ld", &T ) != 1 )
 			T = -1 ;