diff --git a/errors.go b/errors.go
index 28ca48d84..4d7cd8001 100644
--- a/errors.go
+++ b/errors.go
@@ -10,12 +10,6 @@ var (
 	// Deprecated: Use the error variables defined in the bbolt/errors package.
 	ErrDatabaseNotOpen = errors.ErrDatabaseNotOpen
 
-	// ErrDatabaseOpen is returned when opening a database that is
-	// already open.
-	//
-	// Deprecated: Use the error variables defined in the bbolt/errors package.
-	ErrDatabaseOpen = errors.ErrDatabaseOpen
-
 	// ErrInvalid is returned when both meta pages on a database are invalid.
 	// This typically occurs when a file is not a bolt database.
 	//
diff --git a/errors/errors.go b/errors/errors.go
index 88fdc31ac..9598cbd8a 100644
--- a/errors/errors.go
+++ b/errors/errors.go
@@ -10,10 +10,6 @@ var (
 	// is opened or after it is closed.
 	ErrDatabaseNotOpen = errors.New("database not open")
 
-	// ErrDatabaseOpen is returned when opening a database that is
-	// already open.
-	ErrDatabaseOpen = errors.New("database already open")
-
 	// ErrInvalid is returned when both meta pages on a database are invalid.
 	// This typically occurs when a file is not a bolt database.
 	ErrInvalid = errors.New("invalid database")