diff --git a/lib/config.py b/lib/config.py
index b34e353..8ca0293 100644
--- a/lib/config.py
+++ b/lib/config.py
@@ -76,7 +76,7 @@ def _config_set_in_scope(scope: dict, key: str, value, cfg_type: type) -> str:
         if type(value) == cfg_type:
             scope[key] = value
             success = True
-        if type(value) == str:
+        elif type(value) == str:
             if cfg_type == int:
                 scope[key] = int(value)
                 success = True
@@ -93,6 +93,10 @@ def _config_set_in_scope(scope: dict, key: str, value, cfg_type: type) -> str:
                     return 'Unable to convert given value to a boolean!'
                 scope[key] = value
                 success = True
+            else:
+                return 'Unknown config type: ' + str(cfg_type)
+        else:
+            return 'Unknown given value type: ' + str(type(value))
     except (TypeError, ValueError):
         success = False
     if success: