diff --git a/cookbook/integration/integration.py b/cookbook/integration/integration.py
index 48899d366..d1d82c57c 100644
--- a/cookbook/integration/integration.py
+++ b/cookbook/integration/integration.py
@@ -172,7 +172,7 @@ class Integration:
                                 traceback.print_exc()
                                 self.handle_exception(e, log=il, message=f'-------------------- \nERROR \n{e}\n--------------------\n')
                         import_zip.close()
-                    elif '.json' in f['name'] or '.txt' in f['name'] or '.mmf' in f['name']:
+                    elif '.json' in f['name'] or '.txt' in f['name'] or '.mmf' in f['name'] or '.rk' in f['name']:
                         data_list = self.split_recipe_file(f['file'])
                         il.total_recipes += len(data_list)
                         for d in data_list:
diff --git a/cookbook/integration/rezkonv.py b/cookbook/integration/rezkonv.py
index f75db229d..ba4c8e57a 100644
--- a/cookbook/integration/rezkonv.py
+++ b/cookbook/integration/rezkonv.py
@@ -60,9 +60,14 @@ class RezKonv(Integration):
     def split_recipe_file(self, file):
         recipe_list = []
         current_recipe = ''
-
+        encoding_list = ['windows-1250', 'latin-1'] #TODO build algorithm to try trough encodings and fail if none work, use for all importers
+        encoding = 'windows-1250'
         for fl in file.readlines():
-            line = fl.decode("windows-1250")
+            try:
+                line = fl.decode(encoding)
+            except UnicodeDecodeError:
+                encoding = 'latin-1'
+                line = fl.decode(encoding)
             if line.startswith('=====') and 'rezkonv' in line.lower():
                 if current_recipe != '':
                     recipe_list.append(current_recipe)