diff --git a/src/drawing/sprite.c b/src/drawing/sprite.c
index c343ee1ebf..0fc5ef7609 100644
--- a/src/drawing/sprite.c
+++ b/src/drawing/sprite.c
@@ -265,9 +265,11 @@ void gfx_rle_sprite_to_buffer(uint8* source_bits_pointer, uint8* dest_bits_point
 	uint8* next_source_pointer;
 	uint8* next_dest_pointer = dest_bits_pointer;
 
+	int lineWidth = (dpi->width / zoom_amount) + dpi->pitch;
+
 	if (source_y_start < 0){ 
 		source_y_start += zoom_amount; 
-		next_dest_pointer += dpi->width / zoom_amount + dpi->pitch;
+		next_dest_pointer += lineWidth;
 		height -= zoom_amount;
 	}
 
@@ -365,7 +367,7 @@ void gfx_rle_sprite_to_buffer(uint8* source_bits_pointer, uint8* dest_bits_point
 		}
 
 		//Add a line to the drawing surface pointer
-		next_dest_pointer += dpi->width / zoom_amount + dpi->pitch;
+		next_dest_pointer += lineWidth;
 	}
 }