diff --git a/lib.py b/lib.py
index 492f581..a95e476 100644
--- a/lib.py
+++ b/lib.py
@@ -61,7 +61,7 @@ class Interpolator:
 		result = [[None for _ in range(new_w)] for _ in range(new_h)]
 		for x in range(new_w):
 			for y in range(new_h):
-				result[y][x] = get_pixel(picture, x, y, result, quantum_x, quantum_y)
+				result[y][x] = self.get_pixel(picture, x, y, result, quantum_x, quantum_y)
 		return Picture(result)