diff --git a/src/fs/fat12.h b/src/fs/fat12.h
index ef8818f..5a02895 100644
--- a/src/fs/fat12.h
+++ b/src/fs/fat12.h
@@ -1,112 +1,111 @@
 /*************************************************************************
  *  Copyright (C) 2008,2009 by Volker Lanz <vl@fidra.de>                 *
  *  Copyright (C) 2017 by Andrius Štikonas <andrius@stikonas.eu>         *
  *                                                                       *
  *  This program is free software; you can redistribute it and/or        *
  *  modify it under the terms of the GNU General Public License as       *
  *  published by the Free Software Foundation; either version 3 of       *
  *  the License, or (at your option) any later version.                  *
  *                                                                       *
  *  This program is distributed in the hope that it will be useful,      *
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  *  GNU General Public License for more details.                         *
  *                                                                       *
  *  You should have received a copy of the GNU General Public License    *
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.*
  *************************************************************************/
 
-#if !defined(KPMCORE_FAT12_H)
-
+#ifndef KPMCORE_FAT12_H
 #define KPMCORE_FAT12_H
 
 #include "util/libpartitionmanagerexport.h"
 
 #include "fs/filesystem.h"
 
 #include <QtGlobal>
 
 class Report;
 
 class QString;
 
 namespace FS
 {
 /** A fat12 file system.
     @author Andrius Štikonas <vl@fidra.de>
  */
 class LIBKPMCORE_EXPORT fat12 : public FileSystem
 {
 public:
     fat12(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, FileSystem::Type t = FileSystem::Type::Fat12);
 
 public:
     void init() override;
 
     qint64 readUsedCapacity(const QString& deviceNode) const override;
     bool check(Report& report, const QString& deviceNode) const override;
     bool create(Report& report, const QString& deviceNode) override;
     bool updateUUID(Report& report, const QString& deviceNode) const override;
     bool writeLabel(Report& report, const QString& deviceNode, const QString& newLabel) override;
 
     CommandSupportType supportGetUsed() const override {
         return m_GetUsed;
     }
     CommandSupportType supportGetLabel() const override {
         return m_GetLabel;
     }
     CommandSupportType supportSetLabel() const override {
         return m_SetLabel;
     }
     CommandSupportType supportCreate() const override {
         return m_Create;
     }
     CommandSupportType supportGrow() const override {
-        return m_Grow;
+        return cmdSupportNone;
     }
     CommandSupportType supportShrink() const override {
-        return m_Shrink;
+        return cmdSupportNone;
     }
     CommandSupportType supportMove() const override {
         return m_Move;
     }
     CommandSupportType supportCheck() const override {
         return m_Check;
     }
     CommandSupportType supportCopy() const override {
         return m_Copy;
     }
     CommandSupportType supportBackup() const override {
         return m_Backup;
     }
     CommandSupportType supportUpdateUUID() const override {
         return m_UpdateUUID;
     }
     CommandSupportType supportGetUUID() const override {
         return m_GetUUID;
     }
 
     qint64 minCapacity() const override;
     qint64 maxCapacity() const override;
     int maxLabelLength() const override;
     QValidator* labelValidator(QObject *parent) const override;
     SupportTool supportToolName() const override;
     bool supportToolFound() const override;
 
 public:
     static CommandSupportType m_GetUsed;
     static CommandSupportType m_GetLabel;
     static CommandSupportType m_SetLabel;
     static CommandSupportType m_Create;
     static CommandSupportType m_Grow;
     static CommandSupportType m_Shrink;
     static CommandSupportType m_Move;
     static CommandSupportType m_Check;
     static CommandSupportType m_Copy;
     static CommandSupportType m_Backup;
     static CommandSupportType m_UpdateUUID;
     static CommandSupportType m_GetUUID;
 };
 }
 
 #endif
diff --git a/src/fs/fat16.h b/src/fs/fat16.h
index a654431..ea988a5 100644
--- a/src/fs/fat16.h
+++ b/src/fs/fat16.h
@@ -1,52 +1,58 @@
 /*************************************************************************
  *  Copyright (C) 2008,2009 by Volker Lanz <vl@fidra.de>                 *
  *  Copyright (C) 2017 by Andrius Štikonas <andrius@stikonas.eu>         *
  *                                                                       *
  *  This program is free software; you can redistribute it and/or        *
  *  modify it under the terms of the GNU General Public License as       *
  *  published by the Free Software Foundation; either version 3 of       *
  *  the License, or (at your option) any later version.                  *
  *                                                                       *
  *  This program is distributed in the hope that it will be useful,      *
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  *  GNU General Public License for more details.                         *
  *                                                                       *
  *  You should have received a copy of the GNU General Public License    *
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.*
  *************************************************************************/
 
-#if !defined(KPMCORE_FAT16_H)
-
+#ifndef KPMCORE_FAT16_H
 #define KPMCORE_FAT16_H
 
 #include "fs/fat12.h"
 
 class Report;
 
 class QString;
 
 namespace FS
 {
 /** A fat16 file system.
     @author Volker Lanz <vl@fidra.de>
  */
 class LIBKPMCORE_EXPORT fat16 : public fat12
 {
 public:
     fat16(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label);
     fat16(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, FileSystem::Type type);
 
 public:
     void init() override;
 
     bool create(Report& report, const QString& deviceNode) override;
     bool resize(Report& report, const QString& deviceNode, qint64 length) const override;
 
+    CommandSupportType supportGrow() const override {
+        return m_Grow;
+    }
+    CommandSupportType supportShrink() const override {
+        return m_Shrink;
+    }
+
     qint64 minCapacity() const override;
     qint64 maxCapacity() const override;
     bool supportToolFound() const override;
 };
 }
 
 #endif