diff --git a/src/peft/tuners/autograd_4bit.py b/src/peft/tuners/autograd_4bit.py
index 9d86f15..03ad56e 100644
--- a/src/peft/tuners/autograd_4bit.py
+++ b/src/peft/tuners/autograd_4bit.py
@@ -1,4 +1,4 @@
-import .matmul_utils_4bit as mm4b
+from . import matmul_utils_4bit as mm4b
 import torch
 import torch.nn as nn
 import time
diff --git a/src/peft/tuners/matmul_utils_4bit b/src/peft/tuners/matmul_utils_4bit.py
similarity index 100%
rename from src/peft/tuners/matmul_utils_4bit
rename to src/peft/tuners/matmul_utils_4bit.py