1 files changed, 2 insertions, 1 deletions
diff --git a/errors.go b/errors.go
index 6883786..a3620a3 100644
--- a/errors.go
+++ b/errors.go
@@ -12,7 +12,8 @@ var (
 	// already open.
 	ErrDatabaseOpen = errors.New("database already open")
 
-	// ErrInvalid is returned when a data file is not a Bolt-formatted database.
+	// 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")
 
 	// ErrVersionMismatch is returned when the data file was created with a