diff --git a/pmodules_tools/db_diff/check.py b/pmodules_tools/db_diff/check.py
index 4a135e7f..7686f53e 100644
--- a/pmodules_tools/db_diff/check.py
+++ b/pmodules_tools/db_diff/check.py
@@ -21,14 +21,14 @@ def asciidoc_json_dump(list, name, steps, Pmodules_db_path):
         if name != "all":
             with open(db_file, "r") as f:
                 matrix_db = json.load(f)
-        temp_matrix_db = matrix_db.copy()
-        for elem in matrix_db:
-            if (
-                datetime.strptime(elem[-1], "%Y-%m-%d") + timedelta(days=30)
-                < datetime.now()
-            ):
-                temp_matrix_db.remove(elem)
-        matrix_db = temp_matrix_db
+            temp_matrix_db = matrix_db.copy()
+            for elem in matrix_db:
+                if (
+                    datetime.strptime(elem[-1], "%Y-%m-%d") + timedelta(days=30)
+                    < datetime.now()
+                ):
+                    temp_matrix_db.remove(elem)
+            matrix_db = temp_matrix_db
 
     # Update the database for new changes
     if len(list) != 0: