diff --git a/graphics/managed_surface.h b/graphics/managed_surface.h
index 3b8d169ec28..0d5b60891d6 100644
--- a/graphics/managed_surface.h
+++ b/graphics/managed_surface.h
@@ -533,6 +533,24 @@ public:
 		_innerSurface.copyRectToSurface(srcSurface, destX, destY, subRect);
 	}
 
+	/**
+	 * Copy a bitmap to the internal buffer of the surface.
+	 *
+	 * The pixel format of the buffer must match the pixel format of the surface.
+	 */
+	void copyRectToSurfaceWithKey(const void *buffer, int srcPitch, int destX, int destY, int width, int height, uint32 key) {
+		_innerSurface.copyRectToSurfaceWithKey(buffer, srcPitch, destX, destY, width, height, key);
+	}
+
+	/**
+	 * Copy a bitmap to the internal buffer of the surface.
+	 *
+	 * The pixel format of the buffer must match the pixel format of the surface.
+	 */
+	void copyRectToSurfaceWithKey(const Graphics::Surface &srcSurface, int destX, int destY, const Common::Rect subRect, uint32 key) {
+		_innerSurface.copyRectToSurfaceWithKey(srcSurface, destX, destY, subRect, key);
+	}
+
 	/**
 	 * Copy the data from another surface, reinitializing the
 	 * surface to match the dimensions of the passed surface.
diff --git a/graphics/surface.cpp b/graphics/surface.cpp
index 102f84a73a6..66bc3f17f86 100644
--- a/graphics/surface.cpp
+++ b/graphics/surface.cpp
@@ -188,6 +188,26 @@ void Surface::copyRectToSurface(const Graphics::Surface &srcSurface, int destX,
 	copyRectToSurface(srcSurface.getBasePtr(subRect.left, subRect.top), srcSurface.pitch, destX, destY, subRect.width(), subRect.height());
 }
 
+void Surface::copyRectToSurfaceWithKey(const void *buffer, int srcPitch, int destX, int destY, int width, int height, uint32 key) {
+	assert(buffer);
+
+	assert(destX >= 0 && destX < w);
+	assert(destY >= 0 && destY < h);
+	assert(height > 0 && destY + height <= h);
+	assert(width > 0 && destX + width <= w);
+
+	// Copy buffer data to internal buffer
+	const byte *src = (const byte *)buffer;
+	byte *dst = (byte *)getBasePtr(destX, destY);
+	Graphics::keyBlit(dst, src, pitch, srcPitch, width, height, format.bytesPerPixel, key);
+}
+
+void Surface::copyRectToSurfaceWithKey(const Graphics::Surface &srcSurface, int destX, int destY, const Common::Rect subRect, uint32 key) {
+	assert(srcSurface.format == format);
+
+	copyRectToSurfaceWithKey(srcSurface.getBasePtr(subRect.left, subRect.top), srcSurface.pitch, destX, destY, subRect.width(), subRect.height(), key);
+}
+
 void Surface::hLine(int x, int y, int x2, uint32 color) {
 	// Clipping
 	if (y < 0 || y >= h)
diff --git a/graphics/surface.h b/graphics/surface.h
index cccb766f7be..5d2e2a9480b 100644
--- a/graphics/surface.h
+++ b/graphics/surface.h
@@ -289,6 +289,34 @@ public:
 	 */
 	void copyRectToSurface(const Graphics::Surface &srcSurface, int destX, int destY, const Common::Rect subRect);
 
+	/**
+	 * Copy a bitmap to the internal buffer of the surface.
+	 *
+	 * The pixel format of the buffer must match the pixel format of the surface.
+	 *
+	 * @param buffer    Buffer containing the graphics data source.
+	 * @param srcPitch  Pitch of the buffer (number of bytes in a scanline).
+	 * @param destX     The x coordinate of the destination rectangle.
+	 * @param destY     The y coordinate of the destination rectangle.
+	 * @param width     Width of the destination rectangle.
+	 * @param height    Height of the destination rectangle.
+	 * @param key
+	 */
+	void copyRectToSurfaceWithKey(const void *buffer, int srcPitch, int destX, int destY, int width, int height, uint32 key);
+
+	/**
+	 * Copy a bitmap to the internal buffer of the surface.
+	 *
+	 * The pixel format of the buffer must match the pixel format of the surface.
+	 *
+	 * @param srcSurface  Source of the bitmap data.
+	 * @param destX       The x coordinate of the destination rectangle.
+	 * @param destY       The y coordinate of the destination rectangle.
+	 * @param subRect     The subRect of the surface to be blitted.
+	 * @param key
+	 */
+	void copyRectToSurfaceWithKey(const Graphics::Surface &srcSurface, int destX, int destY, const Common::Rect subRect, uint32 key);
+
 	/**
 	 * Convert the data to another pixel format.
 	 *
diff --git a/gui/about.cpp b/gui/about.cpp
index b47b912b6c6..94ec8d52c37 100644
--- a/gui/about.cpp
+++ b/gui/about.cpp
@@ -26,7 +26,6 @@
 #include "common/system.h"
 #include "common/translation.h"
 #include "common/util.h"
-#include "graphics/conversion.h"
 #include "graphics/surface.h"
 #include "graphics/fonts/amigafont.h"
 #include "gui/about.h"
@@ -1099,7 +1098,7 @@ void EE::draw(int sn, int x1, int y1) {
 	int x = x1 * _scale;
 	int y = y1 * _scale;
 
-	Graphics::keyBlit((byte *)_back.getBasePtr(x, y), (const byte *)_sp[sn].getPixels(), _back.pitch, _sp[sn].pitch, _sp[sn].w, _sp[sn].h, _back.format.bytesPerPixel, _colorKey);
+	_back.copyRectToSurfaceWithKey(_sp[sn].getPixels(), _sp[sn].pitch, x, y, _sp[sn].w, _sp[sn].h, _colorKey);
 	g_system->copyRectToOverlay(_back.getBasePtr(x, y), _back.pitch, _windowX + x, _windowY + y, _sp[sn].w, _sp[sn].h);
 }