diff --git a/src/errors.js b/src/errors.js
index e198b0964..9626a735c 100644
--- a/src/errors.js
+++ b/src/errors.js
@@ -75,8 +75,8 @@ derive(ModifyError).from(DexieError);
 //
 //
 
-// Map of {ErrorName + "Error" -> ErrorName + "Error"}
-export var errnames = errorList.reduce((obj,name)=>(obj[name+"Error"]=name+"Error",obj),{});
+// Map of {ErrorName -> ErrorName + "Error"}
+export var errnames = errorList.reduce((obj,name)=>(obj[name]=name+"Error",obj),{});
 
 // Need an alias for DexieError because we're gonna create subclasses with the same name.
 const BaseException = DexieError;