diff --git a/determinate_test.py b/determinate_test.py
index 932bb34..1ab14d2 100644
--- a/determinate_test.py
+++ b/determinate_test.py
@@ -1,4 +1,4 @@
-import determinate3x3
+import modules.determinate3x3 as determinate3x3
 
 Matrix = [
     [4, 3, 6],
diff --git a/determinate2x2.py b/modules/determinate2x2.py
similarity index 100%
rename from determinate2x2.py
rename to modules/determinate2x2.py
diff --git a/determinate3x3.py b/modules/determinate3x3.py
similarity index 97%
rename from determinate3x3.py
rename to modules/determinate3x3.py
index cfc202b..ed5dd6d 100644
--- a/determinate3x3.py
+++ b/modules/determinate3x3.py
@@ -12,7 +12,7 @@ NOTE: You call determinate3x3.det3x3(M) to find the determinate of matrix M.  If
 will receive an AssertionError: "Matrix is not 3x3"
         
 """
-import determinate2x2
+import modules.determinate2x2 as determinate2x2
 import copy
 
 
diff --git a/mat_flat.py b/modules/mat_flat.py
similarity index 99%
rename from mat_flat.py
rename to modules/mat_flat.py
index 4ce789c..4f1e068 100644
--- a/mat_flat.py
+++ b/modules/mat_flat.py
@@ -1,5 +1,6 @@
 
 from typing import List
+
 """
 Flattens a 2D list (matrix) into a 1D list.
 Args:
diff --git a/mat_trans.py b/modules/mat_trans.py
similarity index 100%
rename from mat_trans.py
rename to modules/mat_trans.py