diff --git a/radicale/auth/__init__.py b/radicale/auth/__init__.py
index f0d735a3..c27c394b 100644
--- a/radicale/auth/__init__.py
+++ b/radicale/auth/__init__.py
@@ -72,7 +72,7 @@ def load(configuration):
         class_ = import_module(module).Auth
     except Exception as e:
         raise RuntimeError("Failed to load authentication module %r: %s" %
-                           (auth_type, e)) from e
+                           (module, e)) from e
     logger.info("Authentication type is %r", auth_type)
     return class_(configuration)
 
diff --git a/radicale/rights/__init__.py b/radicale/rights/__init__.py
index 071c9e2e..b67d1000 100644
--- a/radicale/rights/__init__.py
+++ b/radicale/rights/__init__.py
@@ -56,7 +56,7 @@ def load(configuration):
         class_ = import_module(module).Rights
     except Exception as e:
         raise RuntimeError("Failed to load rights module %r: %s" %
-                           (rights_type, e)) from e
+                           (module, e)) from e
     logger.info("Rights type is %r", rights_type)
     return class_(configuration)
 
diff --git a/radicale/storage/__init__.py b/radicale/storage/__init__.py
index 90642ac7..13c93b58 100644
--- a/radicale/storage/__init__.py
+++ b/radicale/storage/__init__.py
@@ -55,7 +55,7 @@ def load(configuration):
         class_ = import_module(module).Collection
     except Exception as e:
         raise RuntimeError("Failed to load storage module %r: %s" %
-                           (storage_type, e)) from e
+                           (module, e)) from e
     logger.info("Storage type is %r", storage_type)
 
     class CollectionCopy(class_):
diff --git a/radicale/web/__init__.py b/radicale/web/__init__.py
index e4dd2cba..0322e696 100644
--- a/radicale/web/__init__.py
+++ b/radicale/web/__init__.py
@@ -32,7 +32,7 @@ def load(configuration):
         class_ = import_module(module).Web
     except Exception as e:
         raise RuntimeError("Failed to load web module %r: %s" %
-                           (web_type, e)) from e
+                           (module, e)) from e
     logger.info("Web type is %r", web_type)
     return class_(configuration)