diff --git a/headers/os/interface/Bitmap.h b/headers/os/interface/Bitmap.h
index aa5801970d..14d99dcbe7 100644
--- a/headers/os/interface/Bitmap.h
+++ b/headers/os/interface/Bitmap.h
@@ -79,20 +79,15 @@ public:
 			status_t			SetDrawingFlags(uint32 flags);
 			uint32				Flags() const;
 
-			void				SetBits(const void* data, int32 length,
-									int32 offset, color_space colorSpace);
-
-	// not part of the R5 API
 			status_t			ImportBits(const void* data, int32 length,
 									int32 bpr, int32 offset,
 									color_space colorSpace);
 			status_t			ImportBits(const void* data, int32 length,
 									int32 bpr, color_space colorSpace,
-									BPoint from, BPoint to, int32 width,
-									int32 height);
+									BPoint from, BPoint to, BSize size);
 			status_t			ImportBits(const BBitmap* bitmap);
 			status_t			ImportBits(const BBitmap* bitmap, BPoint from,
-									BPoint to, int32 width, int32 height);
+									BPoint to, BSize size);
 
 			status_t			GetOverlayRestrictions(
 									overlay_restrictions* restrictions) const;
@@ -111,6 +106,19 @@ public:
 			BBitmap&			operator=(const BBitmap& source);
 
 	class Private;
+
+public:
+	// deprecated
+			void				SetBits(const void* data, int32 length,
+									int32 offset, color_space colorSpace);
+
+public:
+			status_t			ImportBits(const void* data, int32 length,
+									int32 bpr, color_space colorSpace,
+									BPoint from, BPoint to, int32 width, int32 height);
+			status_t			ImportBits(const BBitmap* bitmap, BPoint from,
+									BPoint to, int32 width, int32 height);
+
 private:
 	friend class BView;
 	friend class BApplication;
diff --git a/src/kits/interface/Bitmap.cpp b/src/kits/interface/Bitmap.cpp
index 2f3d085f45..7eeb685788 100644
--- a/src/kits/interface/Bitmap.cpp
+++ b/src/kits/interface/Bitmap.cpp
@@ -720,8 +720,7 @@ BBitmap::ImportBits(const void* data, int32 length, int32 bpr, int32 offset,
 	\param colorSpace Color space of the source data.
 	\param from The offset in the source where reading should begin.
 	\param to The offset in the bitmap where the source should be written.
-	\param width The width (in pixels) to be imported.
-	\param height The height (in pixels) to be imported.
+	\param size The size (in pixels) to be imported.
 	\return
 	- \c B_OK: Everything went fine.
 	- \c B_BAD_VALUE: \c NULL \a data, invalid \a bpr, unsupported
@@ -729,14 +728,14 @@ BBitmap::ImportBits(const void* data, int32 length, int32 bpr, int32 offset,
 */
 status_t
 BBitmap::ImportBits(const void* data, int32 length, int32 bpr,
-	color_space colorSpace, BPoint from, BPoint to, int32 width, int32 height)
+	color_space colorSpace, BPoint from, BPoint to, BSize size)
 {
 	_AssertPointer();
 
 	if (InitCheck() != B_OK)
 		return B_NO_INIT;
 
-	if (!data || length < 0 || width < 0 || height < 0)
+	if (!data || length < 0 || size.IntegerWidth() < 0 || size.IntegerHeight() < 0)
 		return B_BAD_VALUE;
 
 	if (bpr <= 0) {
@@ -747,11 +746,20 @@ BBitmap::ImportBits(const void* data, int32 length, int32 bpr,
 	}
 
 	return BPrivate::ConvertBits(data, fBasePointer, length, fSize, bpr,
-		fBytesPerRow, colorSpace, fColorSpace, from, to, width, height);
+		fBytesPerRow, colorSpace, fColorSpace, from, to,
+		size.IntegerWidth() + 1, size.IntegerHeight() + 1);
 }
 
 
-/*!	\briefly Assigns another bitmap's data to this bitmap.
+status_t
+BBitmap::ImportBits(const void* data, int32 length, int32 bpr,
+	color_space colorSpace, BPoint from, BPoint to, int32 width, int32 height)
+{
+	return ImportBits(data, length, bpr, colorSpace, from, to, BSize(width - 1, height - 1));
+}
+
+
+/*!	\brief Assigns another bitmap's data to this bitmap.
 
 	The supplied bitmap must have the exactly same dimensions as this bitmap.
 	Its data is converted to the color space of this bitmap.
@@ -792,15 +800,13 @@ BBitmap::ImportBits(const BBitmap* bitmap)
 	\param bitmap The source bitmap.
 	\param from The offset in the source where reading should begin.
 	\param to The offset in the bitmap where the source should be written.
-	\param width The width (in pixels) to be imported.
-	\param height The height (in pixels) to be imported.
+	\param size The size (in pixels) to be imported.
 	- \c B_OK: Everything went fine.
 	- \c B_BAD_VALUE: \c NULL \a bitmap, the conversion from or to one of
 	  the color spaces is not supported, or invalid width/height.
 */
 status_t
-BBitmap::ImportBits(const BBitmap* bitmap, BPoint from, BPoint to, int32 width,
-	int32 height)
+BBitmap::ImportBits(const BBitmap* bitmap, BPoint from, BPoint to, BSize size)
 {
 	if (InitCheck() != B_OK)
 		return B_NO_INIT;
@@ -809,7 +815,14 @@ BBitmap::ImportBits(const BBitmap* bitmap, BPoint from, BPoint to, int32 width,
 		return B_BAD_VALUE;
 
 	return ImportBits(bitmap->Bits(), bitmap->BitsLength(),
-		bitmap->BytesPerRow(), bitmap->ColorSpace(), from, to, width, height);
+		bitmap->BytesPerRow(), bitmap->ColorSpace(), from, to, size);
+}
+
+
+status_t
+BBitmap::ImportBits(const BBitmap* bitmap, BPoint from, BPoint to, int32 width, int32 height)
+{
+	return ImportBits(bitmap, from, to, BSize(width - 1, height - 1));
 }