diff --git a/src/display/bitmap.cpp b/src/display/bitmap.cpp
index dd86993a..95eef5dc 100644
--- a/src/display/bitmap.cpp
+++ b/src/display/bitmap.cpp
@@ -927,24 +927,12 @@ IntRect Bitmap::rect() const
 }
 
 void Bitmap::blt(int x, int y,
-                 const Bitmap &source, IntRect rect,
+                 const Bitmap &source, const IntRect &rect,
                  int opacity)
 {
     if (source.isDisposed())
         return;
     
-    // FIXME: RGSS allows the source rect to both lie outside
-    // the bitmap rect and be inverted in both directions;
-    // clamping only covers a subset of these cases (and
-    // doesn't fix anything for a direct stretch_blt call).
-    
-    /* Clamp rect to source bitmap size */
-    if (rect.x + rect.w > source.width())
-        rect.w = source.width() - rect.x;
-    
-    if (rect.y + rect.h > source.height())
-        rect.h = source.height() - rect.y;
-    
     stretchBlt(IntRect(x, y, rect.w, rect.h),
                source, rect, opacity);
 }
diff --git a/src/display/bitmap.h b/src/display/bitmap.h
index a73aa64e..9a1bbddd 100644
--- a/src/display/bitmap.h
+++ b/src/display/bitmap.h
@@ -63,7 +63,7 @@ public:
 	IntRect rect() const;
 
 	void blt(int x, int y,
-	         const Bitmap &source, IntRect rect,
+	         const Bitmap &source, const IntRect &rect,
 	         int opacity = 255);
 
 	void stretchBlt(IntRect destRect,