diff --git a/headers/libs/alm/ALMGroup.h b/headers/libs/alm/ALMGroup.h
index 8886141a33..363c305a65 100644
--- a/headers/libs/alm/ALMGroup.h
+++ b/headers/libs/alm/ALMGroup.h
@@ -60,6 +60,8 @@ private:
 
 			std::vector<ALMGroup> fGroups;
 			enum orientation	fOrientation;
+
+			uint32				_reserved[4];
 };
 
 
diff --git a/headers/libs/alm/ALMLayout.h b/headers/libs/alm/ALMLayout.h
index 480e2b2698..9a7a920a47 100644
--- a/headers/libs/alm/ALMLayout.h
+++ b/headers/libs/alm/ALMLayout.h
@@ -108,6 +108,8 @@ public:
 	virtual	BSize				BasePreferredSize();
 	virtual	BAlignment			BaseAlignment();
 
+	virtual	status_t			Perform(perform_code d, void* arg);
+
 protected:
 	virtual	bool				ItemAdded(BLayoutItem* item, int32 atIndex);
 	virtual	void				ItemRemoved(BLayoutItem* item, int32 fromIndex);
@@ -116,6 +118,24 @@ protected:
 	virtual	void				DoLayout();
 
 private:
+
+	// FBC padding
+	virtual	void				_ReservedALMLayout1();
+	virtual	void				_ReservedALMLayout2();
+	virtual	void				_ReservedALMLayout3();
+	virtual	void				_ReservedALMLayout4();
+	virtual	void				_ReservedALMLayout5();
+	virtual	void				_ReservedALMLayout6();
+	virtual	void				_ReservedALMLayout7();
+	virtual	void				_ReservedALMLayout8();
+	virtual	void				_ReservedALMLayout9();
+	virtual	void				_ReservedALMLayout10();
+
+	// forbidden methods
+								BALMLayout(const BALMLayout&);
+			void				operator =(const BALMLayout&);
+
+
 	friend class XTab;
 	friend class YTab;
 	friend class Area;
@@ -154,6 +174,8 @@ private:
 			YTabList			fYTabList;
 
 			RowColumnManager*	fRowColumnManager;
+
+			uint32				_reserved[5];
 };
 
 }	// namespace BALM
diff --git a/headers/libs/alm/Area.h b/headers/libs/alm/Area.h
index 71e409d449..d0e8c4b472 100644
--- a/headers/libs/alm/Area.h
+++ b/headers/libs/alm/Area.h
@@ -112,6 +112,9 @@ private:
 			void				_UpdateMinSizeConstraint(BSize min);
 			void				_UpdateMaxSizeConstraint(BSize max);
 private:
+	friend class BALMLayout;
+	friend class RowColumnManager;
+
 			BLayoutItem*		fLayoutItem;
 			int32				fID;
 
@@ -141,10 +144,7 @@ private:
 			LinearProgramming::Constraint* fMaxContentHeight;
 			LinearProgramming::Constraint* fContentAspectRatioC;
 
-public:
-	friend class BALMLayout;
-	friend class RowColumnManager;
-
+			uint32				_reserved[2];
 };
 
 }	// namespace BALM
diff --git a/headers/libs/alm/Tab.h b/headers/libs/alm/Tab.h
index a1b4daaa88..ab21ec7a1f 100644
--- a/headers/libs/alm/Tab.h
+++ b/headers/libs/alm/Tab.h
@@ -30,6 +30,8 @@ protected:
 
 private:
 			BALMLayout*			fALMLayout;
+
+			uint32				_reserved[2];
 };
 
 
@@ -43,6 +45,8 @@ protected:
 
 private:
 			BALMLayout*			fALMLayout;
+
+			uint32				_reserved[2];
 };
 
 
diff --git a/src/libs/alm/ALMLayout.cpp b/src/libs/alm/ALMLayout.cpp
index 8976801ff7..83ffb1218e 100644
--- a/src/libs/alm/ALMLayout.cpp
+++ b/src/libs/alm/ALMLayout.cpp
@@ -941,3 +941,23 @@ BALMLayout::_UpdateAreaConstraints()
 		AreaFor(ItemAt(i))->InvalidateSizeConstraints();
 	fRowColumnManager->UpdateConstraints();
 }
+
+
+status_t
+BALMLayout::Perform(perform_code d, void* arg)
+{
+	return BAbstractLayout::Perform(d, arg);
+}
+
+
+void BALMLayout::_ReservedALMLayout1() {}
+void BALMLayout::_ReservedALMLayout2() {}
+void BALMLayout::_ReservedALMLayout3() {}
+void BALMLayout::_ReservedALMLayout4() {}
+void BALMLayout::_ReservedALMLayout5() {}
+void BALMLayout::_ReservedALMLayout6() {}
+void BALMLayout::_ReservedALMLayout7() {}
+void BALMLayout::_ReservedALMLayout8() {}
+void BALMLayout::_ReservedALMLayout9() {}
+void BALMLayout::_ReservedALMLayout10() {}
+