diff --git a/headers/libs/alm/Area.h b/headers/libs/alm/Area.h
index 6f471c6431..e5a3c02a3a 100644
--- a/headers/libs/alm/Area.h
+++ b/headers/libs/alm/Area.h
@@ -56,10 +56,10 @@ public:
 			XTab*				Right() const;
 			YTab*				Top() const;
 			YTab*				Bottom() const;
-			void				SetLeft(XTab* left);
-			void				SetRight(XTab* right);
-			void				SetTop(YTab* top);
-			void				SetBottom(YTab* bottom);
+			void				SetLeft(BReference<XTab> left);
+			void				SetRight(BReference<XTab> right);
+			void				SetTop(BReference<YTab> top);
+			void				SetBottom(BReference<YTab> bottom);
 
 			Row*				GetRow() const;
 			Column*				GetColumn() const;
diff --git a/src/libs/alm/Area.cpp b/src/libs/alm/Area.cpp
index 9093ea82c6..3d0a79488f 100644
--- a/src/libs/alm/Area.cpp
+++ b/src/libs/alm/Area.cpp
@@ -78,7 +78,7 @@ Area::Bottom() const
  * @param left	the left tab of the area
  */
 void
-Area::SetLeft(XTab* left)
+Area::SetLeft(BReference<XTab> left)
 {
 	fLeft = left;
 
@@ -97,7 +97,7 @@ Area::SetLeft(XTab* left)
  * @param right	the right tab of the area
  */
 void
-Area::SetRight(XTab* right)
+Area::SetRight(BReference<XTab> right)
 {
 	fRight = right;
 
@@ -114,7 +114,7 @@ Area::SetRight(XTab* right)
  * Sets the top tab of the area.
  */
 void
-Area::SetTop(YTab* top)
+Area::SetTop(BReference<YTab> top)
 {
 	fTop = top;
 
@@ -131,7 +131,7 @@ Area::SetTop(YTab* top)
  * Sets the bottom tab of the area.
  */
 void
-Area::SetBottom(YTab* bottom)
+Area::SetBottom(BReference<YTab> bottom)
 {
 	fBottom = bottom;