diff --git a/lib.py b/lib.py
index 2830872..fc2f685 100644
--- a/lib.py
+++ b/lib.py
@@ -41,9 +41,9 @@ class Picture:
 		wt = im.width
 		data = []
 		access = im.getdata().pixel_access()
-		for x in range(wt):
+		for y in range(ht):
 			line = []
-			for y in range(ht):
+			for x in range(wt):
 				line.append(Pixel(*(access[x, y])))
 			data.append(line)